projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
qeth: Use blkt defaults for OSA Express 4
[linux-2.6-block.git] / drivers / net / ethernet / ibm / ehea / ehea_main.c
CommitLineData
7a291083 1/*
3396c782 2 * linux/drivers/net/ethernet/ibm/ehea/ehea_main.c
7a291083
JBT		 3 *
4 * eHEA ethernet device driver for IBM eServer System p
5 *
6 * (C) Copyright IBM Corp. 2006
7 *
8 * Authors:
508d2b5d
DM		 9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
7a291083
JBT		 12 *
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
8c4877a4
JP		 29#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30
7a291083
JBT		 31#include <linux/in.h>
32#include <linux/ip.h>
33#include <linux/tcp.h>
34#include <linux/udp.h>
35#include <linux/if.h>
36#include <linux/list.h>
5a0e3ad6 37#include <linux/slab.h>
7a291083 38#include <linux/if_ether.h>
2a6f4e49
JBT		 39#include <linux/notifier.h>
40#include <linux/reboot.h>
48cfb14f 41#include <linux/memory.h>
21eee2dd 42#include <asm/kexec.h>
06f89edf 43#include <linux/mutex.h>
268bb0ce 44#include <linux/prefetch.h>
2a6f4e49 45
7a291083
JBT		 46#include <net/ip.h>
47
48#include "ehea.h"
49#include "ehea_qmr.h"
50#include "ehea_phyp.h"
51
52
53MODULE_LICENSE("GPL");
54MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
55MODULE_DESCRIPTION("IBM eServer HEA Driver");
56MODULE_VERSION(DRV_VERSION);
57
58
59static int msg_level = -1;
60static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
61static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
62static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
63static int sq_entries = EHEA_DEF_ENTRIES_SQ;
b9564468 64static int use_mcs = 1;
508d2b5d 65static int prop_carrier_state;
7a291083
JBT		 66
67module_param(msg_level, int, 0);
68module_param(rq1_entries, int, 0);
69module_param(rq2_entries, int, 0);
70module_param(rq3_entries, int, 0);
71module_param(sq_entries, int, 0);
8759cf76 72module_param(prop_carrier_state, int, 0);
18604c54 73module_param(use_mcs, int, 0);
7a291083
JBT		 74
75MODULE_PARM_DESC(msg_level, "msg_level");
8759cf76
JBT		 76MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
77 "port to stack. 1:yes, 0:no. Default = 0 ");
7a291083
JBT		 78MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
79 "[2^x - 1], x = [6..14]. Default = "
80 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
81MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
82 "[2^x - 1], x = [6..14]. Default = "
83 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
84MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
85 "[2^x - 1], x = [6..14]. Default = "
86 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
87MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
88 "[2^x - 1], x = [6..14]. Default = "
89 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
b9564468
AB		 90MODULE_PARM_DESC(use_mcs, " Multiple receive queues, 1: enable, 0: disable, "
91 "Default = 1");
7a291083 92
508d2b5d 93static int port_name_cnt;
44c82152 94static LIST_HEAD(adapter_list);
48e4cc77 95static unsigned long ehea_driver_flags;
06f89edf 96static DEFINE_MUTEX(dlpar_mem_lock);
1886e5d2
TLSC		 97static struct ehea_fw_handle_array ehea_fw_handles;
98static struct ehea_bcmc_reg_array ehea_bcmc_regs;
21eee2dd 99
d1dea38d 100
2dc11581 101static int __devinit ehea_probe_adapter(struct platform_device *dev,
d1d25aab 102 const struct of_device_id *id);
d1dea38d 103
2dc11581 104static int __devexit ehea_remove(struct platform_device *dev);
d1dea38d
TK		 105
106static struct of_device_id ehea_device_table[] = {
107 {
108 .name = "lhea",
109 .compatible = "IBM,lhea",
110 },
111 {},
112};
b0afffe8 113MODULE_DEVICE_TABLE(of, ehea_device_table);
d1dea38d 114
6b08f3ae 115static struct of_platform_driver ehea_driver = {
4018294b
GL		 116 .driver = {
117 .name = "ehea",
118 .owner = THIS_MODULE,
119 .of_match_table = ehea_device_table,
120 },
d1dea38d
TK		 121 .probe = ehea_probe_adapter,
122 .remove = ehea_remove,
123};
124
508d2b5d
DM		 125void ehea_dump(void *adr, int len, char *msg)
126{
7a291083
JBT		 127 int x;
128 unsigned char *deb = adr;
129 for (x = 0; x < len; x += 16) {
8c4877a4
JP		 130 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
131 msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
7a291083
JBT		 132 deb += 16;
133 }
134}
135
1886e5d2 136static void ehea_schedule_port_reset(struct ehea_port *port)
2f69ae01
JBT		 137{
138 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
139 schedule_work(&port->reset_task);
140}
141
21eee2dd
TK		 142static void ehea_update_firmware_handles(void)
143{
144 struct ehea_fw_handle_entry *arr = NULL;
145 struct ehea_adapter *adapter;
146 int num_adapters = 0;
147 int num_ports = 0;
148 int num_portres = 0;
149 int i = 0;
150 int num_fw_handles, k, l;
151
152 /* Determine number of handles */
52e21b1b
JBT		 153 mutex_lock(&ehea_fw_handles.lock);
154
21eee2dd
TK		 155 list_for_each_entry(adapter, &adapter_list, list) {
156 num_adapters++;
157
158 for (k = 0; k < EHEA_MAX_PORTS; k++) {
159 struct ehea_port *port = adapter->port[k];
160
161 if (!port || (port->state != EHEA_PORT_UP))
162 continue;
163
164 num_ports++;
723f28e4 165 num_portres += port->num_def_qps;
21eee2dd
TK		 166 }
167 }
168
169 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
170 num_ports * EHEA_NUM_PORT_FW_HANDLES +
171 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
172
173 if (num_fw_handles) {
baeb2ffa 174 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
21eee2dd 175 if (!arr)
52e21b1b 176 goto out; /* Keep the existing array */
21eee2dd
TK		 177 } else
178 goto out_update;
179
180 list_for_each_entry(adapter, &adapter_list, list) {
52e21b1b
JBT		 181 if (num_adapters == 0)
182 break;
183
21eee2dd
TK		 184 for (k = 0; k < EHEA_MAX_PORTS; k++) {
185 struct ehea_port *port = adapter->port[k];
186
8e95a202
JP		 187 if (!port || (port->state != EHEA_PORT_UP) ||
188 (num_ports == 0))
21eee2dd
TK		 189 continue;
190
723f28e4 191 for (l = 0; l < port->num_def_qps; l++) {
21eee2dd
TK		 192 struct ehea_port_res *pr = &port->port_res[l];
193
194 arr[i].adh = adapter->handle;
195 arr[i++].fwh = pr->qp->fw_handle;
196 arr[i].adh = adapter->handle;
197 arr[i++].fwh = pr->send_cq->fw_handle;
198 arr[i].adh = adapter->handle;
199 arr[i++].fwh = pr->recv_cq->fw_handle;
200 arr[i].adh = adapter->handle;
201 arr[i++].fwh = pr->eq->fw_handle;
202 arr[i].adh = adapter->handle;
203 arr[i++].fwh = pr->send_mr.handle;
204 arr[i].adh = adapter->handle;
205 arr[i++].fwh = pr->recv_mr.handle;
206 }
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = port->qp_eq->fw_handle;
52e21b1b 209 num_ports--;
21eee2dd
TK		 210 }
211
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = adapter->neq->fw_handle;
214
215 if (adapter->mr.handle) {
216 arr[i].adh = adapter->handle;
217 arr[i++].fwh = adapter->mr.handle;
218 }
52e21b1b 219 num_adapters--;
21eee2dd
TK		 220 }
221
222out_update:
223 kfree(ehea_fw_handles.arr);
224 ehea_fw_handles.arr = arr;
225 ehea_fw_handles.num_entries = i;
52e21b1b
JBT		 226out:
227 mutex_unlock(&ehea_fw_handles.lock);
21eee2dd
TK		 228}
229
230static void ehea_update_bcmc_registrations(void)
231{
52e21b1b 232 unsigned long flags;
21eee2dd
TK		 233 struct ehea_bcmc_reg_entry *arr = NULL;
234 struct ehea_adapter *adapter;
235 struct ehea_mc_list *mc_entry;
236 int num_registrations = 0;
237 int i = 0;
238 int k;
239
52e21b1b
JBT		 240 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
241
21eee2dd
TK		 242 /* Determine number of registrations */
243 list_for_each_entry(adapter, &adapter_list, list)
244 for (k = 0; k < EHEA_MAX_PORTS; k++) {
245 struct ehea_port *port = adapter->port[k];
246
247 if (!port || (port->state != EHEA_PORT_UP))
248 continue;
249
250 num_registrations += 2; /* Broadcast registrations */
251
252 list_for_each_entry(mc_entry, &port->mc_list->list,list)
253 num_registrations += 2;
254 }
255
256 if (num_registrations) {
baeb2ffa 257 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
21eee2dd 258 if (!arr)
52e21b1b 259 goto out; /* Keep the existing array */
21eee2dd
TK		 260 } else
261 goto out_update;
262
263 list_for_each_entry(adapter, &adapter_list, list) {
264 for (k = 0; k < EHEA_MAX_PORTS; k++) {
265 struct ehea_port *port = adapter->port[k];
266
267 if (!port || (port->state != EHEA_PORT_UP))
268 continue;
269
52e21b1b
JBT		 270 if (num_registrations == 0)
271 goto out_update;
272
21eee2dd
TK		 273 arr[i].adh = adapter->handle;
274 arr[i].port_id = port->logical_port_id;
275 arr[i].reg_type = EHEA_BCMC_BROADCAST |
276 EHEA_BCMC_UNTAGGED;
277 arr[i++].macaddr = port->mac_addr;
278
279 arr[i].adh = adapter->handle;
280 arr[i].port_id = port->logical_port_id;
281 arr[i].reg_type = EHEA_BCMC_BROADCAST |
282 EHEA_BCMC_VLANID_ALL;
283 arr[i++].macaddr = port->mac_addr;
52e21b1b 284 num_registrations -= 2;
21eee2dd
TK		 285
286 list_for_each_entry(mc_entry,
287 &port->mc_list->list, list) {
52e21b1b
JBT		 288 if (num_registrations == 0)
289 goto out_update;
290
21eee2dd
TK		 291 arr[i].adh = adapter->handle;
292 arr[i].port_id = port->logical_port_id;
293 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
294 EHEA_BCMC_MULTICAST |
295 EHEA_BCMC_UNTAGGED;
296 arr[i++].macaddr = mc_entry->macaddr;
297
298 arr[i].adh = adapter->handle;
299 arr[i].port_id = port->logical_port_id;
300 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
301 EHEA_BCMC_MULTICAST |
302 EHEA_BCMC_VLANID_ALL;
303 arr[i++].macaddr = mc_entry->macaddr;
52e21b1b 304 num_registrations -= 2;
21eee2dd
TK		 305 }
306 }
307 }
308
309out_update:
310 kfree(ehea_bcmc_regs.arr);
311 ehea_bcmc_regs.arr = arr;
312 ehea_bcmc_regs.num_entries = i;
52e21b1b
JBT		 313out:
314 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
21eee2dd
TK		 315}
316
239c562c
AB		 317static struct rtnl_link_stats64 *ehea_get_stats64(struct net_device *dev,
318 struct rtnl_link_stats64 *stats)
7a291083
JBT		 319{
320 struct ehea_port *port = netdev_priv(dev);
2aefcad8 321 u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0;
7a291083
JBT		 322 int i;
323
2aefcad8 324 for (i = 0; i < port->num_def_qps; i++) {
325 rx_packets += port->port_res[i].rx_packets;
326 rx_bytes += port->port_res[i].rx_bytes;
327 }
328
723f28e4 329 for (i = 0; i < port->num_def_qps; i++) {
2aefcad8 330 tx_packets += port->port_res[i].tx_packets;
331 tx_bytes += port->port_res[i].tx_bytes;
332 }
333
334 stats->tx_packets = tx_packets;
335 stats->rx_bytes = rx_bytes;
336 stats->tx_bytes = tx_bytes;
337 stats->rx_packets = rx_packets;
338
09c1d446
ED		 339 stats->multicast = port->stats.multicast;
340 stats->rx_errors = port->stats.rx_errors;
341 return stats;
2aefcad8 342}
343
344static void ehea_update_stats(struct work_struct *work)
345{
346 struct ehea_port *port =
347 container_of(work, struct ehea_port, stats_work.work);
348 struct net_device *dev = port->netdev;
239c562c 349 struct rtnl_link_stats64 *stats = &port->stats;
2aefcad8 350 struct hcp_ehea_port_cb2 *cb2;
351 u64 hret;
7a291083 352
3d8009c7 353 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 354 if (!cb2) {
2aefcad8 355 netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n");
356 goto resched;
7a291083
JBT		 357 }
358
359 hret = ehea_h_query_ehea_port(port->adapter->handle,
360 port->logical_port_id,
361 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
362 if (hret != H_SUCCESS) {
8c4877a4 363 netdev_err(dev, "query_ehea_port failed\n");
7a291083
JBT		 364 goto out_herr;
365 }
366
367 if (netif_msg_hw(port))
368 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
369
7a291083
JBT		 370 stats->multicast = cb2->rxmcp;
371 stats->rx_errors = cb2->rxuerr;
7a291083
JBT		 372
373out_herr:
3faf2693 374 free_page((unsigned long)cb2);
2aefcad8 375resched:
67c170a2
AB		 376 schedule_delayed_work(&port->stats_work,
377 round_jiffies_relative(msecs_to_jiffies(1000)));
7a291083
JBT		 378}
379
380static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
381{
382 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
383 struct net_device *dev = pr->port->netdev;
384 int max_index_mask = pr->rq1_skba.len - 1;
2c69448b
JBT		 385 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
386 int adder = 0;
7a291083
JBT		 387 int i;
388
2c69448b
JBT		 389 pr->rq1_skba.os_skbs = 0;
390
391 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
44fb3126
TK		 392 if (nr_of_wqes > 0)
393 pr->rq1_skba.index = index;
2c69448b 394 pr->rq1_skba.os_skbs = fill_wqes;
7a291083 395 return;
2c69448b 396 }
7a291083 397
2c69448b 398 for (i = 0; i < fill_wqes; i++) {
7a291083
JBT		 399 if (!skb_arr_rq1[index]) {
400 skb_arr_rq1[index] = netdev_alloc_skb(dev,
401 EHEA_L_PKT_SIZE);
402 if (!skb_arr_rq1[index]) {
8c4877a4 403 netdev_info(dev, "Unable to allocate enough skb in the array\n");
2c69448b 404 pr->rq1_skba.os_skbs = fill_wqes - i;
7a291083
JBT		 405 break;
406 }
407 }
408 index--;
409 index &= max_index_mask;
2c69448b 410 adder++;
7a291083 411 }
2c69448b
JBT		 412
413 if (adder == 0)
414 return;
415
7a291083 416 /* Ring doorbell */
2c69448b 417 ehea_update_rq1a(pr->qp, adder);
7a291083
JBT		 418}
419
e2878806 420static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
7a291083 421{
7a291083
JBT		 422 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
423 struct net_device *dev = pr->port->netdev;
424 int i;
425
5c7e57f7 426 if (nr_rq1a > pr->rq1_skba.len) {
8c4877a4 427 netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
5c7e57f7
BL		 428 return;
429 }
430
431 for (i = 0; i < nr_rq1a; i++) {
7a291083 432 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
5c7e57f7 433 if (!skb_arr_rq1[i]) {
8c4877a4 434 netdev_info(dev, "Not enough memory to allocate skb array\n");
e2878806 435 break;
5c7e57f7 436 }
7a291083
JBT		 437 }
438 /* Ring doorbell */
f76957fc 439 ehea_update_rq1a(pr->qp, i - 1);
7a291083
JBT		 440}
441
442static int ehea_refill_rq_def(struct ehea_port_res *pr,
443 struct ehea_q_skb_arr *q_skba, int rq_nr,
444 int num_wqes, int wqe_type, int packet_size)
445{
446 struct net_device *dev = pr->port->netdev;
447 struct ehea_qp *qp = pr->qp;
448 struct sk_buff **skb_arr = q_skba->arr;
449 struct ehea_rwqe *rwqe;
450 int i, index, max_index_mask, fill_wqes;
2c69448b 451 int adder = 0;
7a291083
JBT		 452 int ret = 0;
453
454 fill_wqes = q_skba->os_skbs + num_wqes;
2c69448b 455 q_skba->os_skbs = 0;
7a291083 456
2c69448b
JBT		 457 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
458 q_skba->os_skbs = fill_wqes;
7a291083 459 return ret;
2c69448b 460 }
7a291083
JBT		 461
462 index = q_skba->index;
463 max_index_mask = q_skba->len - 1;
464 for (i = 0; i < fill_wqes; i++) {
2c69448b 465 u64 tmp_addr;
89d71a66
ED		 466 struct sk_buff *skb;
467
468 skb = netdev_alloc_skb_ip_align(dev, packet_size);
7a291083 469 if (!skb) {
7a291083 470 q_skba->os_skbs = fill_wqes - i;
e2878806 471 if (q_skba->os_skbs == q_skba->len - 2) {
8c4877a4
JP		 472 netdev_info(pr->port->netdev,
473 "rq%i ran dry - no mem for skb\n",
474 rq_nr);
e2878806
TK		 475 ret = -ENOMEM;
476 }
7a291083
JBT		 477 break;
478 }
7a291083
JBT		 479
480 skb_arr[index] = skb;
2c69448b
JBT		 481 tmp_addr = ehea_map_vaddr(skb->data);
482 if (tmp_addr == -1) {
483 dev_kfree_skb(skb);
484 q_skba->os_skbs = fill_wqes - i;
485 ret = 0;
486 break;
487 }
7a291083
JBT		 488
489 rwqe = ehea_get_next_rwqe(qp, rq_nr);
490 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
d1d25aab 491 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
7a291083 492 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
2c69448b 493 rwqe->sg_list[0].vaddr = tmp_addr;
7a291083
JBT		 494 rwqe->sg_list[0].len = packet_size;
495 rwqe->data_segments = 1;
496
497 index++;
498 index &= max_index_mask;
2c69448b 499 adder++;
7a291083 500 }
44c82152 501
7a291083 502 q_skba->index = index;
2c69448b
JBT		 503 if (adder == 0)
504 goto out;
7a291083
JBT		 505
506 /* Ring doorbell */
507 iosync();
508 if (rq_nr == 2)
2c69448b 509 ehea_update_rq2a(pr->qp, adder);
7a291083 510 else
2c69448b 511 ehea_update_rq3a(pr->qp, adder);
44c82152 512out:
7a291083
JBT		 513 return ret;
514}
515
516
517static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
518{
519 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
520 nr_of_wqes, EHEA_RWQE2_TYPE,
89d71a66 521 EHEA_RQ2_PKT_SIZE);
7a291083
JBT		 522}
523
524
525static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
526{
527 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
528 nr_of_wqes, EHEA_RWQE3_TYPE,
89d71a66 529 EHEA_MAX_PACKET_SIZE);
7a291083
JBT		 530}
531
532static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
533{
534 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
535 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
536 return 0;
537 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
538 (cqe->header_length == 0))
539 return 0;
540 return -EINVAL;
541}
542
543static inline void ehea_fill_skb(struct net_device *dev,
b9564468
AB		 544 struct sk_buff *skb, struct ehea_cqe *cqe,
545 struct ehea_port_res *pr)
7a291083
JBT		 546{
547 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
548
549 skb_put(skb, length);
7a291083 550 skb->protocol = eth_type_trans(skb, dev);
71085ce8
BL		 551
552 /* The packet was not an IPV4 packet so a complemented checksum was
553 calculated. The value is found in the Internet Checksum field. */
554 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
555 skb->ip_summed = CHECKSUM_COMPLETE;
556 skb->csum = csum_unfold(~cqe->inet_checksum_value);
557 } else
558 skb->ip_summed = CHECKSUM_UNNECESSARY;
b9564468
AB		 559
560 skb_record_rx_queue(skb, pr - &pr->port->port_res[0]);
7a291083
JBT		 561}
562
563static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
564 int arr_len,
565 struct ehea_cqe *cqe)
566{
567 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
568 struct sk_buff *skb;
569 void *pref;
570 int x;
571
572 x = skb_index + 1;
573 x &= (arr_len - 1);
574
575 pref = skb_array[x];
0b2febf3
HH		 576 if (pref) {
577 prefetchw(pref);
578 prefetchw(pref + EHEA_CACHE_LINE);
579
580 pref = (skb_array[x]->data);
581 prefetch(pref);
582 prefetch(pref + EHEA_CACHE_LINE);
583 prefetch(pref + EHEA_CACHE_LINE * 2);
584 prefetch(pref + EHEA_CACHE_LINE * 3);
585 }
586
7a291083
JBT		 587 skb = skb_array[skb_index];
588 skb_array[skb_index] = NULL;
589 return skb;
590}
591
592static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
593 int arr_len, int wqe_index)
594{
595 struct sk_buff *skb;
596 void *pref;
597 int x;
598
599 x = wqe_index + 1;
600 x &= (arr_len - 1);
601
602 pref = skb_array[x];
0b2febf3
HH		 603 if (pref) {
604 prefetchw(pref);
605 prefetchw(pref + EHEA_CACHE_LINE);
7a291083 606
0b2febf3
HH		 607 pref = (skb_array[x]->data);
608 prefetchw(pref);
609 prefetchw(pref + EHEA_CACHE_LINE);
610 }
7a291083
JBT		 611
612 skb = skb_array[wqe_index];
613 skb_array[wqe_index] = NULL;
614 return skb;
615}
616
617static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
618 struct ehea_cqe *cqe, int *processed_rq2,
619 int *processed_rq3)
620{
621 struct sk_buff *skb;
622
acbddb59
JBT		 623 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
624 pr->p_stats.err_tcp_cksum++;
625 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
626 pr->p_stats.err_ip_cksum++;
627 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
628 pr->p_stats.err_frame_crc++;
629
7a291083
JBT		 630 if (rq == 2) {
631 *processed_rq2 += 1;
632 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
633 dev_kfree_skb(skb);
634 } else if (rq == 3) {
635 *processed_rq3 += 1;
636 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
637 dev_kfree_skb(skb);
638 }
639
640 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
58dd8258 641 if (netif_msg_rx_err(pr->port)) {
8c4877a4
JP		 642 pr_err("Critical receive error for QP %d. Resetting port.\n",
643 pr->qp->init_attr.qp_nr);
58dd8258
TK		 644 ehea_dump(cqe, sizeof(*cqe), "CQE");
645 }
2f69ae01 646 ehea_schedule_port_reset(pr->port);
7a291083
JBT		 647 return 1;
648 }
649
650 return 0;
651}
652
bea3348e
SH		 653static int ehea_proc_rwqes(struct net_device *dev,
654 struct ehea_port_res *pr,
655 int budget)
7a291083 656{
18604c54 657 struct ehea_port *port = pr->port;
7a291083
JBT		 658 struct ehea_qp *qp = pr->qp;
659 struct ehea_cqe *cqe;
660 struct sk_buff *skb;
661 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
662 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
663 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
664 int skb_arr_rq1_len = pr->rq1_skba.len;
665 int skb_arr_rq2_len = pr->rq2_skba.len;
666 int skb_arr_rq3_len = pr->rq3_skba.len;
667 int processed, processed_rq1, processed_rq2, processed_rq3;
ce45b873 668 u64 processed_bytes = 0;
bea3348e 669 int wqe_index, last_wqe_index, rq, port_reset;
7a291083
JBT		 670
671 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
672 last_wqe_index = 0;
7a291083 673
7a291083 674 cqe = ehea_poll_rq1(qp, &wqe_index);
bea3348e 675 while ((processed < budget) && cqe) {
7a291083
JBT		 676 ehea_inc_rq1(qp);
677 processed_rq1++;
678 processed++;
7a291083
JBT		 679 if (netif_msg_rx_status(port))
680 ehea_dump(cqe, sizeof(*cqe), "CQE");
681
682 last_wqe_index = wqe_index;
683 rmb();
684 if (!ehea_check_cqe(cqe, &rq)) {
508d2b5d
DM		 685 if (rq == 1) {
686 /* LL RQ1 */
7a291083
JBT		 687 skb = get_skb_by_index_ll(skb_arr_rq1,
688 skb_arr_rq1_len,
689 wqe_index);
690 if (unlikely(!skb)) {
782615ae 691 netif_info(port, rx_err, dev,
8c4877a4 692 "LL rq1: skb=NULL\n");
18604c54 693
bea3348e 694 skb = netdev_alloc_skb(dev,
7a291083 695 EHEA_L_PKT_SIZE);
5c7e57f7 696 if (!skb) {
782615ae 697 netdev_err(dev, "Not enough memory to allocate skb\n");
7a291083 698 break;
5c7e57f7 699 }
7a291083 700 }
508d2b5d 701 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
d1d25aab 702 cqe->num_bytes_transfered - 4);
b9564468 703 ehea_fill_skb(dev, skb, cqe, pr);
508d2b5d
DM		 704 } else if (rq == 2) {
705 /* RQ2 */
7a291083
JBT		 706 skb = get_skb_by_index(skb_arr_rq2,
707 skb_arr_rq2_len, cqe);
708 if (unlikely(!skb)) {
8c4877a4
JP		 709 netif_err(port, rx_err, dev,
710 "rq2: skb=NULL\n");
7a291083
JBT		 711 break;
712 }
b9564468 713 ehea_fill_skb(dev, skb, cqe, pr);
7a291083 714 processed_rq2++;
508d2b5d
DM		 715 } else {
716 /* RQ3 */
7a291083
JBT		 717 skb = get_skb_by_index(skb_arr_rq3,
718 skb_arr_rq3_len, cqe);
719 if (unlikely(!skb)) {
8c4877a4
JP		 720 netif_err(port, rx_err, dev,
721 "rq3: skb=NULL\n");
7a291083
JBT		 722 break;
723 }
b9564468 724 ehea_fill_skb(dev, skb, cqe, pr);
7a291083
JBT		 725 processed_rq3++;
726 }
727
ce45b873 728 processed_bytes += skb->len;
3428414f
AB		 729
730 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
731 __vlan_hwaccel_put_tag(skb, cqe->vlan_tag);
732
733 napi_gro_receive(&pr->napi, skb);
18604c54 734 } else {
acbddb59 735 pr->p_stats.poll_receive_errors++;
7a291083
JBT		 736 port_reset = ehea_treat_poll_error(pr, rq, cqe,
737 &processed_rq2,
738 &processed_rq3);
739 if (port_reset)
740 break;
741 }
742 cqe = ehea_poll_rq1(qp, &wqe_index);
743 }
744
7a291083 745 pr->rx_packets += processed;
ce45b873 746 pr->rx_bytes += processed_bytes;
7a291083
JBT		 747
748 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
749 ehea_refill_rq2(pr, processed_rq2);
750 ehea_refill_rq3(pr, processed_rq3);
751
bea3348e 752 return processed;
7a291083
JBT		 753}
754
2928db4c
AD		 755#define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
756
757static void reset_sq_restart_flag(struct ehea_port *port)
758{
759 int i;
760
723f28e4 761 for (i = 0; i < port->num_def_qps; i++) {
2928db4c
AD		 762 struct ehea_port_res *pr = &port->port_res[i];
763 pr->sq_restart_flag = 0;
764 }
a8bb69f7 765 wake_up(&port->restart_wq);
2928db4c
AD		 766}
767
768static void check_sqs(struct ehea_port *port)
769{
770 struct ehea_swqe *swqe;
771 int swqe_index;
772 int i, k;
773
723f28e4 774 for (i = 0; i < port->num_def_qps; i++) {
2928db4c 775 struct ehea_port_res *pr = &port->port_res[i];
a8bb69f7 776 int ret;
2928db4c
AD		 777 k = 0;
778 swqe = ehea_get_swqe(pr->qp, &swqe_index);
779 memset(swqe, 0, SWQE_HEADER_SIZE);
780 atomic_dec(&pr->swqe_avail);
781
782 swqe->tx_control |= EHEA_SWQE_PURGE;
783 swqe->wr_id = SWQE_RESTART_CHECK;
784 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
785 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
786 swqe->immediate_data_length = 80;
787
788 ehea_post_swqe(pr->qp, swqe);
789
a8bb69f7
BL		 790 ret = wait_event_timeout(port->restart_wq,
791 pr->sq_restart_flag == 0,
792 msecs_to_jiffies(100));
793
794 if (!ret) {
8c4877a4 795 pr_err("HW/SW queues out of sync\n");
a8bb69f7
BL		 796 ehea_schedule_port_reset(pr->port);
797 return;
2928db4c
AD		 798 }
799 }
2928db4c
AD		 800}
801
802
18604c54 803static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
7a291083 804{
acbddb59 805 struct sk_buff *skb;
7a291083
JBT		 806 struct ehea_cq *send_cq = pr->send_cq;
807 struct ehea_cqe *cqe;
18604c54 808 int quota = my_quota;
7a291083
JBT		 809 int cqe_counter = 0;
810 int swqe_av = 0;
acbddb59 811 int index;
b9564468
AB		 812 struct netdev_queue *txq = netdev_get_tx_queue(pr->port->netdev,
813 pr - &pr->port->port_res[0]);
7a291083 814
18604c54 815 cqe = ehea_poll_cq(send_cq);
508d2b5d 816 while (cqe && (quota > 0)) {
18604c54
JBT		 817 ehea_inc_cq(send_cq);
818
7a291083
JBT		 819 cqe_counter++;
820 rmb();
2928db4c
AD		 821
822 if (cqe->wr_id == SWQE_RESTART_CHECK) {
823 pr->sq_restart_flag = 1;
824 swqe_av++;
825 break;
826 }
827
7a291083 828 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
8c4877a4
JP		 829 pr_err("Bad send completion status=0x%04X\n",
830 cqe->status);
ea96ceac 831
7a291083
JBT		 832 if (netif_msg_tx_err(pr->port))
833 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
ea96ceac
TK		 834
835 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
8c4877a4 836 pr_err("Resetting port\n");
ea96ceac
TK		 837 ehea_schedule_port_reset(pr->port);
838 break;
839 }
7a291083
JBT		 840 }
841
842 if (netif_msg_tx_done(pr->port))
843 ehea_dump(cqe, sizeof(*cqe), "CQE");
844
845 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
acbddb59
JBT		 846 == EHEA_SWQE2_TYPE)) {
847
848 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
849 skb = pr->sq_skba.arr[index];
850 dev_kfree_skb(skb);
851 pr->sq_skba.arr[index] = NULL;
852 }
7a291083
JBT		 853
854 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
855 quota--;
18604c54
JBT		 856
857 cqe = ehea_poll_cq(send_cq);
ee289b64 858 }
7a291083
JBT		 859
860 ehea_update_feca(send_cq, cqe_counter);
861 atomic_add(swqe_av, &pr->swqe_avail);
862
b9564468
AB		 863 if (unlikely(netif_tx_queue_stopped(txq) &&
864 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))) {
865 __netif_tx_lock(txq, smp_processor_id());
866 if (netif_tx_queue_stopped(txq) &&
867 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))
868 netif_tx_wake_queue(txq);
869 __netif_tx_unlock(txq);
7a291083 870 }
b9564468 871
5b27d427 872 wake_up(&pr->port->swqe_avail_wq);
7a291083 873
18604c54 874 return cqe;
7a291083
JBT		 875}
876
bea3348e 877#define EHEA_POLL_MAX_CQES 65535
18604c54 878
bea3348e 879static int ehea_poll(struct napi_struct *napi, int budget)
7a291083 880{
508d2b5d
DM		 881 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
882 napi);
bea3348e 883 struct net_device *dev = pr->port->netdev;
18604c54
JBT		 884 struct ehea_cqe *cqe;
885 struct ehea_cqe *cqe_skb = NULL;
222ca96b 886 int wqe_index;
bea3348e 887 int rx = 0;
18604c54 888
bea3348e 889 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
222ca96b 890 rx += ehea_proc_rwqes(dev, pr, budget - rx);
bea3348e 891
222ca96b 892 while (rx != budget) {
288379f0 893 napi_complete(napi);
18604c54
JBT		 894 ehea_reset_cq_ep(pr->recv_cq);
895 ehea_reset_cq_ep(pr->send_cq);
896 ehea_reset_cq_n1(pr->recv_cq);
897 ehea_reset_cq_n1(pr->send_cq);
a91fb143 898 rmb();
18604c54
JBT		 899 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
900 cqe_skb = ehea_poll_cq(pr->send_cq);
901
e542aa6b 902 if (!cqe && !cqe_skb)
bea3348e 903 return rx;
18604c54 904
288379f0 905 if (!napi_reschedule(napi))
bea3348e 906 return rx;
18604c54 907
bea3348e
SH		 908 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
909 rx += ehea_proc_rwqes(dev, pr, budget - rx);
910 }
e542aa6b 911
bea3348e 912 return rx;
7a291083
JBT		 913}
914
8d22c971
JBT		 915#ifdef CONFIG_NET_POLL_CONTROLLER
916static void ehea_netpoll(struct net_device *dev)
917{
918 struct ehea_port *port = netdev_priv(dev);
bea3348e 919 int i;
8d22c971 920
bea3348e 921 for (i = 0; i < port->num_def_qps; i++)
288379f0 922 napi_schedule(&port->port_res[i].napi);
8d22c971
JBT		 923}
924#endif
925
7d12e780 926static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
7a291083
JBT		 927{
928 struct ehea_port_res *pr = param;
18604c54 929
288379f0 930 napi_schedule(&pr->napi);
18604c54 931
7a291083
JBT		 932 return IRQ_HANDLED;
933}
934
7d12e780 935static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
7a291083
JBT		 936{
937 struct ehea_port *port = param;
938 struct ehea_eqe *eqe;
d2db9eea 939 struct ehea_qp *qp;
7a291083 940 u32 qp_token;
ea96ceac
TK		 941 u64 resource_type, aer, aerr;
942 int reset_port = 0;
7a291083
JBT		 943
944 eqe = ehea_poll_eq(port->qp_eq);
bb3a6449 945
7a291083 946 while (eqe) {
7a291083 947 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
8c4877a4
JP		 948 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
949 eqe->entry, qp_token);
d2db9eea
JBT		 950
951 qp = port->port_res[qp_token].qp;
ea96ceac
TK		 952
953 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
954 &aer, &aerr);
955
956 if (resource_type == EHEA_AER_RESTYPE_QP) {
957 if ((aer & EHEA_AER_RESET_MASK) ||
958 (aerr & EHEA_AERR_RESET_MASK))
959 reset_port = 1;
960 } else
961 reset_port = 1; /* Reset in case of CQ or EQ error */
962
bb3a6449 963 eqe = ehea_poll_eq(port->qp_eq);
7a291083
JBT		 964 }
965
ea96ceac 966 if (reset_port) {
8c4877a4 967 pr_err("Resetting port\n");
ea96ceac
TK		 968 ehea_schedule_port_reset(port);
969 }
d2db9eea 970
7a291083
JBT		 971 return IRQ_HANDLED;
972}
973
974static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
975 int logical_port)
976{
977 int i;
978
1acf2318 979 for (i = 0; i < EHEA_MAX_PORTS; i++)
41b69c70 980 if (adapter->port[i])
d1d25aab 981 if (adapter->port[i]->logical_port_id == logical_port)
41b69c70 982 return adapter->port[i];
7a291083
JBT		 983 return NULL;
984}
985
986int ehea_sense_port_attr(struct ehea_port *port)
987{
988 int ret;
989 u64 hret;
990 struct hcp_ehea_port_cb0 *cb0;
991
508d2b5d 992 /* may be called via ehea_neq_tasklet() */
3faf2693 993 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
508d2b5d 994 if (!cb0) {
8c4877a4 995 pr_err("no mem for cb0\n");
7a291083
JBT		 996 ret = -ENOMEM;
997 goto out;
998 }
999
1000 hret = ehea_h_query_ehea_port(port->adapter->handle,
1001 port->logical_port_id, H_PORT_CB0,
1002 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1003 cb0);
1004 if (hret != H_SUCCESS) {
1005 ret = -EIO;
1006 goto out_free;
1007 }
1008
1009 /* MAC address */
1010 port->mac_addr = cb0->port_mac_addr << 16;
1011
508d2b5d 1012 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
7a291083
JBT		 1013 ret = -EADDRNOTAVAIL;
1014 goto out_free;
1015 }
1016
1017 /* Port speed */
1018 switch (cb0->port_speed) {
1019 case H_SPEED_10M_H:
1020 port->port_speed = EHEA_SPEED_10M;
1021 port->full_duplex = 0;
1022 break;
1023 case H_SPEED_10M_F:
1024 port->port_speed = EHEA_SPEED_10M;
1025 port->full_duplex = 1;
1026 break;
1027 case H_SPEED_100M_H:
1028 port->port_speed = EHEA_SPEED_100M;
1029 port->full_duplex = 0;
1030 break;
1031 case H_SPEED_100M_F:
1032 port->port_speed = EHEA_SPEED_100M;
1033 port->full_duplex = 1;
1034 break;
1035 case H_SPEED_1G_F:
1036 port->port_speed = EHEA_SPEED_1G;
1037 port->full_duplex = 1;
1038 break;
1039 case H_SPEED_10G_F:
1040 port->port_speed = EHEA_SPEED_10G;
1041 port->full_duplex = 1;
1042 break;
1043 default:
1044 port->port_speed = 0;
1045 port->full_duplex = 0;
1046 break;
1047 }
1048
e919b593 1049 port->autoneg = 1;
18604c54 1050 port->num_mcs = cb0->num_default_qps;
e919b593 1051
7a291083 1052 /* Number of default QPs */
18604c54
JBT		 1053 if (use_mcs)
1054 port->num_def_qps = cb0->num_default_qps;
1055 else
1056 port->num_def_qps = 1;
7a291083
JBT		 1057
1058 if (!port->num_def_qps) {
1059 ret = -EINVAL;
1060 goto out_free;
1061 }
1062
7a291083
JBT		 1063 ret = 0;
1064out_free:
1065 if (ret || netif_msg_probe(port))
1066 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
3faf2693 1067 free_page((unsigned long)cb0);
7a291083
JBT		 1068out:
1069 return ret;
1070}
1071
1072int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1073{
1074 struct hcp_ehea_port_cb4 *cb4;
1075 u64 hret;
1076 int ret = 0;
1077
3faf2693 1078 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1079 if (!cb4) {
8c4877a4 1080 pr_err("no mem for cb4\n");
7a291083
JBT		 1081 ret = -ENOMEM;
1082 goto out;
1083 }
1084
1085 cb4->port_speed = port_speed;
1086
1087 netif_carrier_off(port->netdev);
1088
1089 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1090 port->logical_port_id,
1091 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1092 if (hret == H_SUCCESS) {
1093 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1094
1095 hret = ehea_h_query_ehea_port(port->adapter->handle,
1096 port->logical_port_id,
1097 H_PORT_CB4, H_PORT_CB4_SPEED,
1098 cb4);
1099 if (hret == H_SUCCESS) {
1100 switch (cb4->port_speed) {
1101 case H_SPEED_10M_H:
1102 port->port_speed = EHEA_SPEED_10M;
1103 port->full_duplex = 0;
1104 break;
1105 case H_SPEED_10M_F:
1106 port->port_speed = EHEA_SPEED_10M;
1107 port->full_duplex = 1;
1108 break;
1109 case H_SPEED_100M_H:
1110 port->port_speed = EHEA_SPEED_100M;
1111 port->full_duplex = 0;
1112 break;
1113 case H_SPEED_100M_F:
1114 port->port_speed = EHEA_SPEED_100M;
1115 port->full_duplex = 1;
1116 break;
1117 case H_SPEED_1G_F:
1118 port->port_speed = EHEA_SPEED_1G;
1119 port->full_duplex = 1;
1120 break;
1121 case H_SPEED_10G_F:
1122 port->port_speed = EHEA_SPEED_10G;
1123 port->full_duplex = 1;
1124 break;
1125 default:
1126 port->port_speed = 0;
1127 port->full_duplex = 0;
1128 break;
1129 }
1130 } else {
8c4877a4 1131 pr_err("Failed sensing port speed\n");
7a291083
JBT		 1132 ret = -EIO;
1133 }
1134 } else {
1135 if (hret == H_AUTHORITY) {
8c4877a4 1136 pr_info("Hypervisor denied setting port speed\n");
7a291083
JBT		 1137 ret = -EPERM;
1138 } else {
1139 ret = -EIO;
8c4877a4 1140 pr_err("Failed setting port speed\n");
7a291083
JBT		 1141 }
1142 }
8759cf76
JBT		 1143 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1144 netif_carrier_on(port->netdev);
1145
3faf2693 1146 free_page((unsigned long)cb4);
7a291083
JBT		 1147out:
1148 return ret;
1149}
1150
1151static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1152{
1153 int ret;
1154 u8 ec;
1155 u8 portnum;
1156 struct ehea_port *port;
8c4877a4 1157 struct net_device *dev;
7a291083
JBT		 1158
1159 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1160 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1161 port = ehea_get_port(adapter, portnum);
8c4877a4 1162 dev = port->netdev;
7a291083
JBT		 1163
1164 switch (ec) {
1165 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1166
1167 if (!port) {
8c4877a4 1168 netdev_err(dev, "unknown portnum %x\n", portnum);
7a291083
JBT		 1169 break;
1170 }
1171
1172 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
8c4877a4 1173 if (!netif_carrier_ok(dev)) {
1e1675cc 1174 ret = ehea_sense_port_attr(port);
7a291083 1175 if (ret) {
8c4877a4 1176 netdev_err(dev, "failed resensing port attributes\n");
7a291083
JBT		 1177 break;
1178 }
1179
8c4877a4
JP		 1180 netif_info(port, link, dev,
1181 "Logical port up: %dMbps %s Duplex\n",
1182 port->port_speed,
1183 port->full_duplex == 1 ?
1184 "Full" : "Half");
7a291083 1185
8c4877a4
JP		 1186 netif_carrier_on(dev);
1187 netif_wake_queue(dev);
7a291083
JBT		 1188 }
1189 } else
8c4877a4
JP		 1190 if (netif_carrier_ok(dev)) {
1191 netif_info(port, link, dev,
1192 "Logical port down\n");
1193 netif_carrier_off(dev);
b9564468 1194 netif_tx_disable(dev);
7a291083
JBT		 1195 }
1196
1197 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
8759cf76 1198 port->phy_link = EHEA_PHY_LINK_UP;
8c4877a4
JP		 1199 netif_info(port, link, dev,
1200 "Physical port up\n");
8759cf76 1201 if (prop_carrier_state)
8c4877a4 1202 netif_carrier_on(dev);
7a291083 1203 } else {
8759cf76 1204 port->phy_link = EHEA_PHY_LINK_DOWN;
8c4877a4
JP		 1205 netif_info(port, link, dev,
1206 "Physical port down\n");
8759cf76 1207 if (prop_carrier_state)
8c4877a4 1208 netif_carrier_off(dev);
7a291083
JBT		 1209 }
1210
1211 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
8c4877a4
JP		 1212 netdev_info(dev,
1213 "External switch port is primary port\n");
7a291083 1214 else
8c4877a4
JP		 1215 netdev_info(dev,
1216 "External switch port is backup port\n");
7a291083
JBT		 1217
1218 break;
1219 case EHEA_EC_ADAPTER_MALFUNC:
8c4877a4 1220 netdev_err(dev, "Adapter malfunction\n");
7a291083
JBT		 1221 break;
1222 case EHEA_EC_PORT_MALFUNC:
8c4877a4
JP		 1223 netdev_info(dev, "Port malfunction\n");
1224 netif_carrier_off(dev);
b9564468 1225 netif_tx_disable(dev);
7a291083
JBT		 1226 break;
1227 default:
8c4877a4 1228 netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe);
7a291083
JBT		 1229 break;
1230 }
1231}
1232
1233static void ehea_neq_tasklet(unsigned long data)
1234{
508d2b5d 1235 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
7a291083
JBT		 1236 struct ehea_eqe *eqe;
1237 u64 event_mask;
1238
1239 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1240 pr_debug("eqe=%p\n", eqe);
7a291083
JBT		 1241
1242 while (eqe) {
8c4877a4 1243 pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
7a291083
JBT		 1244 ehea_parse_eqe(adapter, eqe->entry);
1245 eqe = ehea_poll_eq(adapter->neq);
8c4877a4 1246 pr_debug("next eqe=%p\n", eqe);
7a291083
JBT		 1247 }
1248
1249 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1250 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1251 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1252
1253 ehea_h_reset_events(adapter->handle,
1254 adapter->neq->fw_handle, event_mask);
1255}
1256
7d12e780 1257static irqreturn_t ehea_interrupt_neq(int irq, void *param)
7a291083
JBT		 1258{
1259 struct ehea_adapter *adapter = param;
1260 tasklet_hi_schedule(&adapter->neq_tasklet);
1261 return IRQ_HANDLED;
1262}
1263
1264
1265static int ehea_fill_port_res(struct ehea_port_res *pr)
1266{
1267 int ret;
1268 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1269
f76957fc 1270 ehea_init_fill_rq1(pr, pr->rq1_skba.len);
7a291083 1271
e2878806 1272 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
7a291083
JBT		 1273
1274 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1275
1276 return ret;
1277}
1278
1279static int ehea_reg_interrupts(struct net_device *dev)
1280{
1281 struct ehea_port *port = netdev_priv(dev);
1282 struct ehea_port_res *pr;
1283 int i, ret;
1284
7a291083
JBT		 1285
1286 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1287 dev->name);
1288
6b08f3ae 1289 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
7a291083 1290 ehea_qp_aff_irq_handler,
38515e90 1291 IRQF_DISABLED, port->int_aff_name, port);
7a291083 1292 if (ret) {
8c4877a4
JP		 1293 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1294 port->qp_eq->attr.ist1);
7a291083
JBT		 1295 goto out_free_qpeq;
1296 }
1297
8c4877a4
JP		 1298 netif_info(port, ifup, dev,
1299 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1300 port->qp_eq->attr.ist1);
7a291083 1301
18604c54 1302
723f28e4 1303 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 1304 pr = &port->port_res[i];
1305 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
18604c54 1306 "%s-queue%d", dev->name, i);
6b08f3ae 1307 ret = ibmebus_request_irq(pr->eq->attr.ist1,
18604c54 1308 ehea_recv_irq_handler,
38515e90 1309 IRQF_DISABLED, pr->int_send_name,
7a291083
JBT		 1310 pr);
1311 if (ret) {
8c4877a4
JP		 1312 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1313 i, pr->eq->attr.ist1);
7a291083
JBT		 1314 goto out_free_req;
1315 }
8c4877a4
JP		 1316 netif_info(port, ifup, dev,
1317 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1318 pr->eq->attr.ist1, i);
7a291083
JBT		 1319 }
1320out:
1321 return ret;
1322
18604c54 1323
7a291083
JBT		 1324out_free_req:
1325 while (--i >= 0) {
18604c54 1326 u32 ist = port->port_res[i].eq->attr.ist1;
6b08f3ae 1327 ibmebus_free_irq(ist, &port->port_res[i]);
7a291083 1328 }
18604c54 1329
7a291083 1330out_free_qpeq:
6b08f3ae 1331 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
7a291083 1332 i = port->num_def_qps;
18604c54 1333
7a291083 1334 goto out;
18604c54 1335
7a291083
JBT		 1336}
1337
1338static void ehea_free_interrupts(struct net_device *dev)
1339{
1340 struct ehea_port *port = netdev_priv(dev);
1341 struct ehea_port_res *pr;
1342 int i;
1343
1344 /* send */
18604c54 1345
723f28e4 1346 for (i = 0; i < port->num_def_qps; i++) {
7a291083 1347 pr = &port->port_res[i];
6b08f3ae 1348 ibmebus_free_irq(pr->eq->attr.ist1, pr);
8c4877a4
JP		 1349 netif_info(port, intr, dev,
1350 "free send irq for res %d with handle 0x%X\n",
1351 i, pr->eq->attr.ist1);
7a291083
JBT		 1352 }
1353
1354 /* associated events */
6b08f3ae 1355 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
8c4877a4
JP		 1356 netif_info(port, intr, dev,
1357 "associated event interrupt for handle 0x%X freed\n",
1358 port->qp_eq->attr.ist1);
7a291083
JBT		 1359}
1360
1361static int ehea_configure_port(struct ehea_port *port)
1362{
1363 int ret, i;
1364 u64 hret, mask;
1365 struct hcp_ehea_port_cb0 *cb0;
1366
1367 ret = -ENOMEM;
3faf2693 1368 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 1369 if (!cb0)
1370 goto out;
1371
1372 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1373 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1374 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1375 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1376 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1377 PXLY_RC_VLAN_FILTER)
1378 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1379
18604c54
JBT		 1380 for (i = 0; i < port->num_mcs; i++)
1381 if (use_mcs)
1382 cb0->default_qpn_arr[i] =
1383 port->port_res[i].qp->init_attr.qp_nr;
1384 else
1385 cb0->default_qpn_arr[i] =
1386 port->port_res[0].qp->init_attr.qp_nr;
e542aa6b 1387
7a291083
JBT		 1388 if (netif_msg_ifup(port))
1389 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1390
1391 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1392 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1393
1394 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1395 port->logical_port_id,
1396 H_PORT_CB0, mask, cb0);
1397 ret = -EIO;
1398 if (hret != H_SUCCESS)
1399 goto out_free;
1400
1401 ret = 0;
1402
1403out_free:
3faf2693 1404 free_page((unsigned long)cb0);
7a291083
JBT		 1405out:
1406 return ret;
1407}
1408
1886e5d2 1409static int ehea_gen_smrs(struct ehea_port_res *pr)
7a291083 1410{
e542aa6b 1411 int ret;
7a291083
JBT		 1412 struct ehea_adapter *adapter = pr->port->adapter;
1413
e542aa6b
JBT		 1414 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1415 if (ret)
7a291083
JBT		 1416 goto out;
1417
e542aa6b
JBT		 1418 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1419 if (ret)
1420 goto out_free;
7a291083
JBT		 1421
1422 return 0;
1423
e542aa6b
JBT		 1424out_free:
1425 ehea_rem_mr(&pr->send_mr);
7a291083 1426out:
8c4877a4 1427 pr_err("Generating SMRS failed\n");
7a291083
JBT		 1428 return -EIO;
1429}
1430
1886e5d2 1431static int ehea_rem_smrs(struct ehea_port_res *pr)
7a291083 1432{
8e95a202
JP		 1433 if ((ehea_rem_mr(&pr->send_mr)) ||
1434 (ehea_rem_mr(&pr->recv_mr)))
e542aa6b
JBT		 1435 return -EIO;
1436 else
1437 return 0;
7a291083
JBT		 1438}
1439
1440static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1441{
508d2b5d 1442 int arr_size = sizeof(void *) * max_q_entries;
7a291083 1443
89bf67f1 1444 q_skba->arr = vzalloc(arr_size);
7a291083
JBT		 1445 if (!q_skba->arr)
1446 return -ENOMEM;
1447
7a291083
JBT		 1448 q_skba->len = max_q_entries;
1449 q_skba->index = 0;
1450 q_skba->os_skbs = 0;
1451
1452 return 0;
1453}
1454
1455static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1456 struct port_res_cfg *pr_cfg, int queue_token)
1457{
1458 struct ehea_adapter *adapter = port->adapter;
1459 enum ehea_eq_type eq_type = EHEA_EQ;
1460 struct ehea_qp_init_attr *init_attr = NULL;
1461 int ret = -EIO;
ce45b873
BL		 1462 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1463
1464 tx_bytes = pr->tx_bytes;
1465 tx_packets = pr->tx_packets;
1466 rx_bytes = pr->rx_bytes;
1467 rx_packets = pr->rx_packets;
7a291083
JBT		 1468
1469 memset(pr, 0, sizeof(struct ehea_port_res));
1470
ce45b873
BL		 1471 pr->tx_bytes = rx_bytes;
1472 pr->tx_packets = tx_packets;
1473 pr->rx_bytes = rx_bytes;
1474 pr->rx_packets = rx_packets;
1475
7a291083 1476 pr->port = port;
7a291083 1477
18604c54
JBT		 1478 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1479 if (!pr->eq) {
8c4877a4 1480 pr_err("create_eq failed (eq)\n");
7a291083
JBT		 1481 goto out_free;
1482 }
1483
1484 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
18604c54 1485 pr->eq->fw_handle,
7a291083
JBT		 1486 port->logical_port_id);
1487 if (!pr->recv_cq) {
8c4877a4 1488 pr_err("create_cq failed (cq_recv)\n");
7a291083
JBT		 1489 goto out_free;
1490 }
1491
1492 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
18604c54 1493 pr->eq->fw_handle,
7a291083
JBT		 1494 port->logical_port_id);
1495 if (!pr->send_cq) {
8c4877a4 1496 pr_err("create_cq failed (cq_send)\n");
7a291083
JBT		 1497 goto out_free;
1498 }
1499
1500 if (netif_msg_ifup(port))
8c4877a4
JP		 1501 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1502 pr->send_cq->attr.act_nr_of_cqes,
1503 pr->recv_cq->attr.act_nr_of_cqes);
7a291083
JBT		 1504
1505 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1506 if (!init_attr) {
1507 ret = -ENOMEM;
8c4877a4 1508 pr_err("no mem for ehea_qp_init_attr\n");
7a291083
JBT		 1509 goto out_free;
1510 }
1511
1512 init_attr->low_lat_rq1 = 1;
1513 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1514 init_attr->rq_count = 3;
1515 init_attr->qp_token = queue_token;
1516 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1517 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1518 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1519 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1520 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1521 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1522 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1523 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1524 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1525 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1526 init_attr->port_nr = port->logical_port_id;
1527 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1528 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1529 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1530
1531 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1532 if (!pr->qp) {
8c4877a4 1533 pr_err("create_qp failed\n");
7a291083
JBT		 1534 ret = -EIO;
1535 goto out_free;
1536 }
1537
1538 if (netif_msg_ifup(port))
8c4877a4
JP		 1539 pr_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d\n",
1540 init_attr->qp_nr,
1541 init_attr->act_nr_send_wqes,
1542 init_attr->act_nr_rwqes_rq1,
1543 init_attr->act_nr_rwqes_rq2,
1544 init_attr->act_nr_rwqes_rq3);
7a291083 1545
44fb3126
TK		 1546 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1547
1548 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
7a291083
JBT		 1549 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1550 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1551 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1552 if (ret)
1553 goto out_free;
1554
1555 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1556 if (ehea_gen_smrs(pr) != 0) {
1557 ret = -EIO;
1558 goto out_free;
1559 }
18604c54 1560
7a291083
JBT		 1561 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1562
1563 kfree(init_attr);
18604c54 1564
bea3348e 1565 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
18604c54 1566
7a291083
JBT		 1567 ret = 0;
1568 goto out;
1569
1570out_free:
1571 kfree(init_attr);
1572 vfree(pr->sq_skba.arr);
1573 vfree(pr->rq1_skba.arr);
1574 vfree(pr->rq2_skba.arr);
1575 vfree(pr->rq3_skba.arr);
1576 ehea_destroy_qp(pr->qp);
1577 ehea_destroy_cq(pr->send_cq);
1578 ehea_destroy_cq(pr->recv_cq);
18604c54 1579 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1580out:
1581 return ret;
1582}
1583
1584static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1585{
1586 int ret, i;
1587
357eb46d
HH		 1588 if (pr->qp)
1589 netif_napi_del(&pr->napi);
1590
7a291083
JBT		 1591 ret = ehea_destroy_qp(pr->qp);
1592
1593 if (!ret) {
1594 ehea_destroy_cq(pr->send_cq);
1595 ehea_destroy_cq(pr->recv_cq);
18604c54 1596 ehea_destroy_eq(pr->eq);
7a291083
JBT		 1597
1598 for (i = 0; i < pr->rq1_skba.len; i++)
1599 if (pr->rq1_skba.arr[i])
1600 dev_kfree_skb(pr->rq1_skba.arr[i]);
1601
1602 for (i = 0; i < pr->rq2_skba.len; i++)
1603 if (pr->rq2_skba.arr[i])
1604 dev_kfree_skb(pr->rq2_skba.arr[i]);
1605
1606 for (i = 0; i < pr->rq3_skba.len; i++)
1607 if (pr->rq3_skba.arr[i])
1608 dev_kfree_skb(pr->rq3_skba.arr[i]);
1609
1610 for (i = 0; i < pr->sq_skba.len; i++)
1611 if (pr->sq_skba.arr[i])
1612 dev_kfree_skb(pr->sq_skba.arr[i]);
1613
1614 vfree(pr->rq1_skba.arr);
1615 vfree(pr->rq2_skba.arr);
1616 vfree(pr->rq3_skba.arr);
1617 vfree(pr->sq_skba.arr);
1618 ret = ehea_rem_smrs(pr);
1619 }
1620 return ret;
1621}
1622
13946f5e
AB		 1623static void write_swqe2_immediate(struct sk_buff *skb, struct ehea_swqe *swqe,
1624 u32 lkey)
7a291083 1625{
e743d313 1626 int skb_data_size = skb_headlen(skb);
7a291083
JBT		 1627 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1628 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
13946f5e
AB		 1629 unsigned int immediate_len = SWQE2_MAX_IMM;
1630
1631 swqe->descriptors = 0;
7a291083 1632
13946f5e
AB		 1633 if (skb_is_gso(skb)) {
1634 swqe->tx_control |= EHEA_SWQE_TSO;
1635 swqe->mss = skb_shinfo(skb)->gso_size;
1636 /*
1637 * For TSO packets we only copy the headers into the
1638 * immediate area.
1639 */
1640 immediate_len = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1641 }
7a291083 1642
13946f5e
AB		 1643 if (skb_is_gso(skb) || skb_data_size >= SWQE2_MAX_IMM) {
1644 skb_copy_from_linear_data(skb, imm_data, immediate_len);
1645 swqe->immediate_data_length = immediate_len;
7a291083 1646
13946f5e 1647 if (skb_data_size > immediate_len) {
7a291083 1648 sg1entry->l_key = lkey;
13946f5e 1649 sg1entry->len = skb_data_size - immediate_len;
44a5b3d5 1650 sg1entry->vaddr =
13946f5e 1651 ehea_map_vaddr(skb->data + immediate_len);
7a291083
JBT		 1652 swqe->descriptors++;
1653 }
1654 } else {
d626f62b 1655 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
7a291083
JBT		 1656 swqe->immediate_data_length = skb_data_size;
1657 }
1658}
1659
1660static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1661 struct ehea_swqe *swqe, u32 lkey)
1662{
1663 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1664 skb_frag_t *frag;
1665 int nfrags, sg1entry_contains_frag_data, i;
7a291083
JBT		 1666
1667 nfrags = skb_shinfo(skb)->nr_frags;
1668 sg1entry = &swqe->u.immdata_desc.sg_entry;
508d2b5d 1669 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
7a291083
JBT		 1670 sg1entry_contains_frag_data = 0;
1671
13946f5e 1672 write_swqe2_immediate(skb, swqe, lkey);
7a291083
JBT		 1673
1674 /* write descriptors */
1675 if (nfrags > 0) {
1676 if (swqe->descriptors == 0) {
1677 /* sg1entry not yet used */
1678 frag = &skb_shinfo(skb)->frags[0];
1679
1680 /* copy sg1entry data */
1681 sg1entry->l_key = lkey;
9e903e08 1682 sg1entry->len = skb_frag_size(frag);
44a5b3d5 1683 sg1entry->vaddr =
618c4a0a 1684 ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1685 swqe->descriptors++;
1686 sg1entry_contains_frag_data = 1;
1687 }
1688
1689 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1690
1691 frag = &skb_shinfo(skb)->frags[i];
1692 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1693
1694 sgentry->l_key = lkey;
0110bba5 1695 sgentry->len = skb_frag_size(frag);
618c4a0a 1696 sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag));
7a291083
JBT		 1697 swqe->descriptors++;
1698 }
1699 }
1700}
1701
1702static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1703{
1704 int ret = 0;
1705 u64 hret;
1706 u8 reg_type;
1707
1708 /* De/Register untagged packets */
1709 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1710 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1711 port->logical_port_id,
1712 reg_type, port->mac_addr, 0, hcallid);
1713 if (hret != H_SUCCESS) {
8c4877a4
JP		 1714 pr_err("%sregistering bc address failed (tagged)\n",
1715 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1716 ret = -EIO;
1717 goto out_herr;
1718 }
1719
1720 /* De/Register VLAN packets */
1721 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1722 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1723 port->logical_port_id,
1724 reg_type, port->mac_addr, 0, hcallid);
1725 if (hret != H_SUCCESS) {
8c4877a4
JP		 1726 pr_err("%sregistering bc address failed (vlan)\n",
1727 hcallid == H_REG_BCMC ? "" : "de");
7a291083
JBT		 1728 ret = -EIO;
1729 }
1730out_herr:
1731 return ret;
1732}
1733
1734static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1735{
1736 struct ehea_port *port = netdev_priv(dev);
1737 struct sockaddr *mac_addr = sa;
1738 struct hcp_ehea_port_cb0 *cb0;
1739 int ret;
1740 u64 hret;
1741
1742 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1743 ret = -EADDRNOTAVAIL;
1744 goto out;
1745 }
1746
3faf2693 1747 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 1748 if (!cb0) {
8c4877a4 1749 pr_err("no mem for cb0\n");
7a291083
JBT		 1750 ret = -ENOMEM;
1751 goto out;
1752 }
1753
1754 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1755
1756 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1757
1758 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1759 port->logical_port_id, H_PORT_CB0,
1760 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1761 if (hret != H_SUCCESS) {
1762 ret = -EIO;
1763 goto out_free;
1764 }
1765
1766 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1767
1768 /* Deregister old MAC in pHYP */
00aaea2f
JBT		 1769 if (port->state == EHEA_PORT_UP) {
1770 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1771 if (ret)
1772 goto out_upregs;
1773 }
7a291083
JBT		 1774
1775 port->mac_addr = cb0->port_mac_addr << 16;
1776
1777 /* Register new MAC in pHYP */
00aaea2f
JBT		 1778 if (port->state == EHEA_PORT_UP) {
1779 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1780 if (ret)
1781 goto out_upregs;
1782 }
7a291083
JBT		 1783
1784 ret = 0;
21eee2dd
TK		 1785
1786out_upregs:
1787 ehea_update_bcmc_registrations();
7a291083 1788out_free:
3faf2693 1789 free_page((unsigned long)cb0);
7a291083
JBT		 1790out:
1791 return ret;
1792}
1793
1794static void ehea_promiscuous_error(u64 hret, int enable)
1795{
7674a588 1796 if (hret == H_AUTHORITY)
8c4877a4
JP		 1797 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1798 enable == 1 ? "en" : "dis");
7674a588 1799 else
8c4877a4
JP		 1800 pr_err("failed %sabling promiscuous mode\n",
1801 enable == 1 ? "en" : "dis");
7a291083
JBT		 1802}
1803
1804static void ehea_promiscuous(struct net_device *dev, int enable)
1805{
1806 struct ehea_port *port = netdev_priv(dev);
1807 struct hcp_ehea_port_cb7 *cb7;
1808 u64 hret;
1809
aa3bc6c6 1810 if (enable == port->promisc)
7a291083
JBT		 1811 return;
1812
3faf2693 1813 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
7a291083 1814 if (!cb7) {
8c4877a4 1815 pr_err("no mem for cb7\n");
7a291083
JBT		 1816 goto out;
1817 }
1818
1819 /* Modify Pxs_DUCQPN in CB7 */
1820 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1821
1822 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1823 port->logical_port_id,
1824 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1825 if (hret) {
1826 ehea_promiscuous_error(hret, enable);
1827 goto out;
1828 }
1829
1830 port->promisc = enable;
1831out:
3faf2693 1832 free_page((unsigned long)cb7);
7a291083
JBT		 1833}
1834
1835static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1836 u32 hcallid)
1837{
1838 u64 hret;
1839 u8 reg_type;
1840
1841 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1842 | EHEA_BCMC_UNTAGGED;
1843
1844 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1845 port->logical_port_id,
1846 reg_type, mc_mac_addr, 0, hcallid);
1847 if (hret)
1848 goto out;
1849
1850 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1851 | EHEA_BCMC_VLANID_ALL;
1852
1853 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1854 port->logical_port_id,
1855 reg_type, mc_mac_addr, 0, hcallid);
1856out:
1857 return hret;
1858}
1859
1860static int ehea_drop_multicast_list(struct net_device *dev)
1861{
1862 struct ehea_port *port = netdev_priv(dev);
1863 struct ehea_mc_list *mc_entry = port->mc_list;
1864 struct list_head *pos;
1865 struct list_head *temp;
1866 int ret = 0;
1867 u64 hret;
1868
1869 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1870 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1871
1872 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1873 H_DEREG_BCMC);
1874 if (hret) {
8c4877a4 1875 pr_err("failed deregistering mcast MAC\n");
7a291083
JBT		 1876 ret = -EIO;
1877 }
1878
1879 list_del(pos);
1880 kfree(mc_entry);
1881 }
1882 return ret;
1883}
1884
1885static void ehea_allmulti(struct net_device *dev, int enable)
1886{
1887 struct ehea_port *port = netdev_priv(dev);
1888 u64 hret;
1889
1890 if (!port->allmulti) {
1891 if (enable) {
1892 /* Enable ALLMULTI */
1893 ehea_drop_multicast_list(dev);
1894 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1895 if (!hret)
1896 port->allmulti = 1;
1897 else
8c4877a4
JP		 1898 netdev_err(dev,
1899 "failed enabling IFF_ALLMULTI\n");
7a291083
JBT		 1900 }
1901 } else
1902 if (!enable) {
1903 /* Disable ALLMULTI */
1904 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1905 if (!hret)
1906 port->allmulti = 0;
1907 else
8c4877a4
JP		 1908 netdev_err(dev,
1909 "failed disabling IFF_ALLMULTI\n");
7a291083
JBT		 1910 }
1911}
1912
508d2b5d 1913static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
7a291083
JBT		 1914{
1915 struct ehea_mc_list *ehea_mcl_entry;
1916 u64 hret;
1917
1e1675cc 1918 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
7a291083 1919 if (!ehea_mcl_entry) {
8c4877a4 1920 pr_err("no mem for mcl_entry\n");
7a291083
JBT		 1921 return;
1922 }
1923
1924 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1925
1926 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1927
1928 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1929 H_REG_BCMC);
1930 if (!hret)
1931 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1932 else {
8c4877a4 1933 pr_err("failed registering mcast MAC\n");
7a291083
JBT		 1934 kfree(ehea_mcl_entry);
1935 }
1936}
1937
1938static void ehea_set_multicast_list(struct net_device *dev)
1939{
1940 struct ehea_port *port = netdev_priv(dev);
22bedad3 1941 struct netdev_hw_addr *ha;
48e2f183 1942 int ret;
7a291083 1943
a4910b74 1944 if (port->promisc) {
7a291083
JBT		 1945 ehea_promiscuous(dev, 1);
1946 return;
1947 }
1948 ehea_promiscuous(dev, 0);
1949
1950 if (dev->flags & IFF_ALLMULTI) {
1951 ehea_allmulti(dev, 1);
21eee2dd 1952 goto out;
7a291083
JBT		 1953 }
1954 ehea_allmulti(dev, 0);
1955
4cd24eaf 1956 if (!netdev_mc_empty(dev)) {
7a291083
JBT		 1957 ret = ehea_drop_multicast_list(dev);
1958 if (ret) {
1959 /* Dropping the current multicast list failed.
1960 * Enabling ALL_MULTI is the best we can do.
1961 */
1962 ehea_allmulti(dev, 1);
1963 }
1964
4cd24eaf 1965 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
8c4877a4
JP		 1966 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
1967 port->adapter->max_mc_mac);
7a291083
JBT		 1968 goto out;
1969 }
1970
22bedad3
JP		 1971 netdev_for_each_mc_addr(ha, dev)
1972 ehea_add_multicast_entry(port, ha->addr);
508d2b5d 1973
7a291083
JBT		 1974 }
1975out:
21eee2dd 1976 ehea_update_bcmc_registrations();
7a291083
JBT		 1977}
1978
1979static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1980{
1981 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1982 return -EINVAL;
1983 dev->mtu = new_mtu;
1984 return 0;
1985}
1986
d695c335 1987static void xmit_common(struct sk_buff *skb, struct ehea_swqe *swqe)
7a291083 1988{
d695c335 1989 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT | EHEA_SWQE_CRC;
d1d25aab 1990
d695c335
AB		 1991 if (skb->protocol != htons(ETH_P_IP))
1992 return;
7a291083 1993
d695c335
AB		 1994 if (skb->ip_summed == CHECKSUM_PARTIAL)
1995 swqe->tx_control |= EHEA_SWQE_IP_CHECKSUM;
7a291083 1996
d695c335
AB		 1997 swqe->ip_start = skb_network_offset(skb);
1998 swqe->ip_end = swqe->ip_start + ip_hdrlen(skb) - 1;
7a291083 1999
d695c335
AB		 2000 switch (ip_hdr(skb)->protocol) {
2001 case IPPROTO_UDP:
2002 if (skb->ip_summed == CHECKSUM_PARTIAL)
2003 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
7a291083 2004
d695c335
AB		 2005 swqe->tcp_offset = swqe->ip_end + 1 +
2006 offsetof(struct udphdr, check);
d695c335
AB		 2007 break;
2008
2009 case IPPROTO_TCP:
2010 if (skb->ip_summed == CHECKSUM_PARTIAL)
2011 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
2012
2013 swqe->tcp_offset = swqe->ip_end + 1 +
2014 offsetof(struct tcphdr, check);
d695c335 2015 break;
7a291083 2016 }
d695c335
AB		 2017}
2018
2019static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2020 struct ehea_swqe *swqe, u32 lkey)
2021{
2022 swqe->tx_control |= EHEA_SWQE_DESCRIPTORS_PRESENT;
2023
2024 xmit_common(skb, swqe);
7a291083
JBT		 2025
2026 write_swqe2_data(skb, dev, swqe, lkey);
2027}
2028
2029static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2030 struct ehea_swqe *swqe)
2031{
7a291083 2032 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
7a291083 2033
d695c335 2034 xmit_common(skb, swqe);
d1d25aab 2035
30e2e90b 2036 if (!skb->data_len)
d626f62b 2037 skb_copy_from_linear_data(skb, imm_data, skb->len);
30e2e90b
AB		 2038 else
2039 skb_copy_bits(skb, 0, imm_data, skb->len);
d695c335 2040
7a291083
JBT		 2041 swqe->immediate_data_length = skb->len;
2042 dev_kfree_skb(skb);
2043}
2044
2045static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2046{
2047 struct ehea_port *port = netdev_priv(dev);
2048 struct ehea_swqe *swqe;
7a291083
JBT		 2049 u32 lkey;
2050 int swqe_index;
18604c54 2051 struct ehea_port_res *pr;
b9564468 2052 struct netdev_queue *txq;
18604c54 2053
b9564468
AB		 2054 pr = &port->port_res[skb_get_queue_mapping(skb)];
2055 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
18604c54 2056
7a291083
JBT		 2057 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2058 memset(swqe, 0, SWQE_HEADER_SIZE);
2059 atomic_dec(&pr->swqe_avail);
2060
e5ccd961
ED		 2061 if (vlan_tx_tag_present(skb)) {
2062 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2063 swqe->vlan_tag = vlan_tx_tag_get(skb);
2064 }
2065
ce45b873
BL		 2066 pr->tx_packets++;
2067 pr->tx_bytes += skb->len;
2068
7a291083
JBT		 2069 if (skb->len <= SWQE3_MAX_IMM) {
2070 u32 sig_iv = port->sig_comp_iv;
2071 u32 swqe_num = pr->swqe_id_counter;
2072 ehea_xmit3(skb, dev, swqe);
2073 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2074 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2075 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2076 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2077 sig_iv);
2078 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2079 pr->swqe_ll_count = 0;
2080 } else
2081 pr->swqe_ll_count += 1;
2082 } else {
2083 swqe->wr_id =
2084 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2085 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
acbddb59 2086 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
7a291083
JBT		 2087 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2088 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2089
2090 pr->sq_skba.index++;
2091 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2092
2093 lkey = pr->send_mr.lkey;
2094 ehea_xmit2(skb, dev, swqe, lkey);
acbddb59 2095 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
7a291083
JBT		 2096 }
2097 pr->swqe_id_counter += 1;
2098
8c4877a4
JP		 2099 netif_info(port, tx_queued, dev,
2100 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2101 if (netif_msg_tx_queued(port))
bff0a55f 2102 ehea_dump(swqe, 512, "swqe");
7a291083 2103
2c69448b 2104 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
b9564468 2105 netif_tx_stop_queue(txq);
2c69448b
JBT		 2106 swqe->tx_control |= EHEA_SWQE_PURGE;
2107 }
44c82152 2108
7a291083 2109 ehea_post_swqe(pr->qp, swqe);
7a291083
JBT		 2110
2111 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
b9564468
AB		 2112 pr->p_stats.queue_stopped++;
2113 netif_tx_stop_queue(txq);
7a291083 2114 }
2c69448b 2115
7a291083
JBT		 2116 return NETDEV_TX_OK;
2117}
2118
8e586137 2119static int ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
7a291083
JBT		 2120{
2121 struct ehea_port *port = netdev_priv(dev);
2122 struct ehea_adapter *adapter = port->adapter;
2123 struct hcp_ehea_port_cb1 *cb1;
2124 int index;
2125 u64 hret;
8e586137 2126 int err = 0;
7a291083 2127
3faf2693 2128 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2129 if (!cb1) {
8c4877a4 2130 pr_err("no mem for cb1\n");
8e586137 2131 err = -ENOMEM;
7a291083
JBT		 2132 goto out;
2133 }
2134
2135 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2136 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2137 if (hret != H_SUCCESS) {
8c4877a4 2138 pr_err("query_ehea_port failed\n");
8e586137 2139 err = -EINVAL;
7a291083
JBT		 2140 goto out;
2141 }
2142
2143 index = (vid / 64);
dec590c1 2144 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2145
2146 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2147 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
8e586137 2148 if (hret != H_SUCCESS) {
8c4877a4 2149 pr_err("modify_ehea_port failed\n");
8e586137
JP		 2150 err = -EINVAL;
2151 }
7a291083 2152out:
3faf2693 2153 free_page((unsigned long)cb1);
8e586137 2154 return err;
7a291083
JBT		 2155}
2156
8e586137 2157static int ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
7a291083
JBT		 2158{
2159 struct ehea_port *port = netdev_priv(dev);
2160 struct ehea_adapter *adapter = port->adapter;
2161 struct hcp_ehea_port_cb1 *cb1;
2162 int index;
2163 u64 hret;
8e586137 2164 int err = 0;
7a291083 2165
3faf2693 2166 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2167 if (!cb1) {
8c4877a4 2168 pr_err("no mem for cb1\n");
8e586137 2169 err = -ENOMEM;
7a291083
JBT		 2170 goto out;
2171 }
2172
2173 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2174 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2175 if (hret != H_SUCCESS) {
8c4877a4 2176 pr_err("query_ehea_port failed\n");
8e586137 2177 err = -EINVAL;
7a291083
JBT		 2178 goto out;
2179 }
2180
2181 index = (vid / 64);
dec590c1 2182 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
7a291083
JBT		 2183
2184 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2185 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
8e586137 2186 if (hret != H_SUCCESS) {
8c4877a4 2187 pr_err("modify_ehea_port failed\n");
8e586137
JP		 2188 err = -EINVAL;
2189 }
7a291083 2190out:
3faf2693 2191 free_page((unsigned long)cb1);
8e586137 2192 return err;
7a291083
JBT		 2193}
2194
1886e5d2 2195static int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
7a291083
JBT		 2196{
2197 int ret = -EIO;
2198 u64 hret;
2199 u16 dummy16 = 0;
2200 u64 dummy64 = 0;
508d2b5d 2201 struct hcp_modify_qp_cb0 *cb0;
7a291083 2202
3faf2693 2203 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2204 if (!cb0) {
2205 ret = -ENOMEM;
2206 goto out;
2207 }
2208
2209 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2210 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2211 if (hret != H_SUCCESS) {
8c4877a4 2212 pr_err("query_ehea_qp failed (1)\n");
7a291083
JBT		 2213 goto out;
2214 }
2215
2216 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2217 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2218 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2219 &dummy64, &dummy64, &dummy16, &dummy16);
2220 if (hret != H_SUCCESS) {
8c4877a4 2221 pr_err("modify_ehea_qp failed (1)\n");
7a291083
JBT		 2222 goto out;
2223 }
2224
2225 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2226 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2227 if (hret != H_SUCCESS) {
8c4877a4 2228 pr_err("query_ehea_qp failed (2)\n");
7a291083
JBT		 2229 goto out;
2230 }
2231
2232 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2233 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2234 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2235 &dummy64, &dummy64, &dummy16, &dummy16);
2236 if (hret != H_SUCCESS) {
8c4877a4 2237 pr_err("modify_ehea_qp failed (2)\n");
7a291083
JBT		 2238 goto out;
2239 }
2240
2241 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2242 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2243 if (hret != H_SUCCESS) {
8c4877a4 2244 pr_err("query_ehea_qp failed (3)\n");
7a291083
JBT		 2245 goto out;
2246 }
2247
2248 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2249 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2250 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2251 &dummy64, &dummy64, &dummy16, &dummy16);
2252 if (hret != H_SUCCESS) {
8c4877a4 2253 pr_err("modify_ehea_qp failed (3)\n");
7a291083
JBT		 2254 goto out;
2255 }
2256
2257 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2258 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2259 if (hret != H_SUCCESS) {
8c4877a4 2260 pr_err("query_ehea_qp failed (4)\n");
7a291083
JBT		 2261 goto out;
2262 }
2263
2264 ret = 0;
2265out:
3faf2693 2266 free_page((unsigned long)cb0);
7a291083
JBT		 2267 return ret;
2268}
2269
723f28e4 2270static int ehea_port_res_setup(struct ehea_port *port, int def_qps)
7a291083
JBT		 2271{
2272 int ret, i;
2273 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2274 enum ehea_eq_type eq_type = EHEA_EQ;
2275
2276 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2277 EHEA_MAX_ENTRIES_EQ, 1);
2278 if (!port->qp_eq) {
2279 ret = -EINVAL;
8c4877a4 2280 pr_err("ehea_create_eq failed (qp_eq)\n");
7a291083
JBT		 2281 goto out_kill_eq;
2282 }
2283
2284 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
18604c54 2285 pr_cfg.max_entries_scq = sq_entries * 2;
7a291083
JBT		 2286 pr_cfg.max_entries_sq = sq_entries;
2287 pr_cfg.max_entries_rq1 = rq1_entries;
2288 pr_cfg.max_entries_rq2 = rq2_entries;
2289 pr_cfg.max_entries_rq3 = rq3_entries;
2290
2291 pr_cfg_small_rx.max_entries_rcq = 1;
2292 pr_cfg_small_rx.max_entries_scq = sq_entries;
2293 pr_cfg_small_rx.max_entries_sq = sq_entries;
2294 pr_cfg_small_rx.max_entries_rq1 = 1;
2295 pr_cfg_small_rx.max_entries_rq2 = 1;
2296 pr_cfg_small_rx.max_entries_rq3 = 1;
2297
2298 for (i = 0; i < def_qps; i++) {
2299 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2300 if (ret)
2301 goto out_clean_pr;
2302 }
723f28e4 2303 for (i = def_qps; i < def_qps; i++) {
7a291083
JBT		 2304 ret = ehea_init_port_res(port, &port->port_res[i],
2305 &pr_cfg_small_rx, i);
2306 if (ret)
2307 goto out_clean_pr;
2308 }
2309
2310 return 0;
2311
2312out_clean_pr:
2313 while (--i >= 0)
2314 ehea_clean_portres(port, &port->port_res[i]);
2315
2316out_kill_eq:
2317 ehea_destroy_eq(port->qp_eq);
2318 return ret;
2319}
2320
2321static int ehea_clean_all_portres(struct ehea_port *port)
2322{
2323 int ret = 0;
2324 int i;
2325
723f28e4 2326 for (i = 0; i < port->num_def_qps; i++)
7a291083
JBT		 2327 ret |= ehea_clean_portres(port, &port->port_res[i]);
2328
2329 ret |= ehea_destroy_eq(port->qp_eq);
2330
2331 return ret;
2332}
2333
35cf2e2e 2334static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2335{
35cf2e2e
TK		 2336 if (adapter->active_ports)
2337 return;
1211bb6d
TK		 2338
2339 ehea_rem_mr(&adapter->mr);
2340}
2341
35cf2e2e 2342static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
1211bb6d 2343{
35cf2e2e
TK		 2344 if (adapter->active_ports)
2345 return 0;
1211bb6d
TK		 2346
2347 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2348}
2349
7a291083
JBT		 2350static int ehea_up(struct net_device *dev)
2351{
2352 int ret, i;
2353 struct ehea_port *port = netdev_priv(dev);
7a291083
JBT		 2354
2355 if (port->state == EHEA_PORT_UP)
2356 return 0;
2357
723f28e4 2358 ret = ehea_port_res_setup(port, port->num_def_qps);
7a291083 2359 if (ret) {
8c4877a4 2360 netdev_err(dev, "port_res_failed\n");
7a291083
JBT		 2361 goto out;
2362 }
2363
2364 /* Set default QP for this port */
2365 ret = ehea_configure_port(port);
2366 if (ret) {
8c4877a4 2367 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
7a291083
JBT		 2368 goto out_clean_pr;
2369 }
2370
7a291083
JBT		 2371 ret = ehea_reg_interrupts(dev);
2372 if (ret) {
8c4877a4 2373 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
f9e29228 2374 goto out_clean_pr;
7a291083
JBT		 2375 }
2376
723f28e4 2377 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2378 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2379 if (ret) {
8c4877a4 2380 netdev_err(dev, "activate_qp failed\n");
7a291083
JBT		 2381 goto out_free_irqs;
2382 }
2383 }
2384
508d2b5d 2385 for (i = 0; i < port->num_def_qps; i++) {
7a291083
JBT		 2386 ret = ehea_fill_port_res(&port->port_res[i]);
2387 if (ret) {
8c4877a4 2388 netdev_err(dev, "out_free_irqs\n");
7a291083
JBT		 2389 goto out_free_irqs;
2390 }
2391 }
2392
21eee2dd
TK		 2393 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2394 if (ret) {
2395 ret = -EIO;
2396 goto out_free_irqs;
2397 }
2398
7a291083 2399 port->state = EHEA_PORT_UP;
21eee2dd
TK		 2400
2401 ret = 0;
7a291083
JBT		 2402 goto out;
2403
2404out_free_irqs:
2405 ehea_free_interrupts(dev);
2406
7a291083
JBT		 2407out_clean_pr:
2408 ehea_clean_all_portres(port);
2409out:
44c82152 2410 if (ret)
8c4877a4 2411 netdev_info(dev, "Failed starting. ret=%i\n", ret);
44c82152 2412
21eee2dd 2413 ehea_update_bcmc_registrations();
21eee2dd 2414 ehea_update_firmware_handles();
21eee2dd 2415
7a291083
JBT		 2416 return ret;
2417}
2418
bea3348e
SH		 2419static void port_napi_disable(struct ehea_port *port)
2420{
2421 int i;
2422
723f28e4 2423 for (i = 0; i < port->num_def_qps; i++)
bea3348e
SH		 2424 napi_disable(&port->port_res[i].napi);
2425}
2426
2427static void port_napi_enable(struct ehea_port *port)
2428{
2429 int i;
2430
723f28e4 2431 for (i = 0; i < port->num_def_qps; i++)
bea3348e
SH		 2432 napi_enable(&port->port_res[i].napi);
2433}
2434
7a291083
JBT		 2435static int ehea_open(struct net_device *dev)
2436{
2437 int ret;
2438 struct ehea_port *port = netdev_priv(dev);
2439
a5af6ad3 2440 mutex_lock(&port->port_lock);
7a291083 2441
8c4877a4 2442 netif_info(port, ifup, dev, "enabling port\n");
7a291083
JBT		 2443
2444 ret = ehea_up(dev);
bea3348e
SH		 2445 if (!ret) {
2446 port_napi_enable(port);
b9564468 2447 netif_tx_start_all_queues(dev);
bea3348e 2448 }
7a291083 2449
a5af6ad3 2450 mutex_unlock(&port->port_lock);
67c170a2
AB		 2451 schedule_delayed_work(&port->stats_work,
2452 round_jiffies_relative(msecs_to_jiffies(1000)));
7a291083
JBT		 2453
2454 return ret;
2455}
2456
2457static int ehea_down(struct net_device *dev)
2458{
bea3348e 2459 int ret;
7a291083
JBT		 2460 struct ehea_port *port = netdev_priv(dev);
2461
2462 if (port->state == EHEA_PORT_DOWN)
2463 return 0;
2464
2465 ehea_drop_multicast_list(dev);
21eee2dd
TK		 2466 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2467
7a291083
JBT		 2468 ehea_free_interrupts(dev);
2469
7a291083 2470 port->state = EHEA_PORT_DOWN;
44c82152 2471
21eee2dd 2472 ehea_update_bcmc_registrations();
21eee2dd 2473
44c82152
TK		 2474 ret = ehea_clean_all_portres(port);
2475 if (ret)
8c4877a4 2476 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
44c82152 2477
21eee2dd 2478 ehea_update_firmware_handles();
21eee2dd 2479
7a291083
JBT		 2480 return ret;
2481}
2482
2483static int ehea_stop(struct net_device *dev)
2484{
2485 int ret;
2486 struct ehea_port *port = netdev_priv(dev);
2487
8c4877a4 2488 netif_info(port, ifdown, dev, "disabling port\n");
7a291083 2489
2f69ae01 2490 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
4bb073c0 2491 cancel_work_sync(&port->reset_task);
2aefcad8 2492 cancel_delayed_work_sync(&port->stats_work);
a5af6ad3 2493 mutex_lock(&port->port_lock);
b9564468 2494 netif_tx_stop_all_queues(dev);
0173b793 2495 port_napi_disable(port);
7a291083 2496 ret = ehea_down(dev);
a5af6ad3 2497 mutex_unlock(&port->port_lock);
2f69ae01 2498 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
7a291083
JBT		 2499 return ret;
2500}
2501
22559c5d 2502static void ehea_purge_sq(struct ehea_qp *orig_qp)
2c69448b
JBT		 2503{
2504 struct ehea_qp qp = *orig_qp;
2505 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2506 struct ehea_swqe *swqe;
2507 int wqe_index;
2508 int i;
2509
2510 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2511 swqe = ehea_get_swqe(&qp, &wqe_index);
2512 swqe->tx_control |= EHEA_SWQE_PURGE;
2513 }
2514}
2515
22559c5d 2516static void ehea_flush_sq(struct ehea_port *port)
44fb3126
TK		 2517{
2518 int i;
2519
723f28e4 2520 for (i = 0; i < port->num_def_qps; i++) {
44fb3126
TK		 2521 struct ehea_port_res *pr = &port->port_res[i];
2522 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
5b27d427
BL		 2523 int ret;
2524
2525 ret = wait_event_timeout(port->swqe_avail_wq,
2526 atomic_read(&pr->swqe_avail) >= swqe_max,
2527 msecs_to_jiffies(100));
2528
2529 if (!ret) {
8c4877a4 2530 pr_err("WARNING: sq not flushed completely\n");
5b27d427 2531 break;
44fb3126
TK		 2532 }
2533 }
2534}
2535
1886e5d2 2536static int ehea_stop_qps(struct net_device *dev)
2c69448b
JBT		 2537{
2538 struct ehea_port *port = netdev_priv(dev);
2539 struct ehea_adapter *adapter = port->adapter;
508d2b5d 2540 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2541 int ret = -EIO;
2542 int dret;
2543 int i;
2544 u64 hret;
2545 u64 dummy64 = 0;
2546 u16 dummy16 = 0;
2547
3faf2693 2548 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2549 if (!cb0) {
2550 ret = -ENOMEM;
2551 goto out;
2552 }
2553
723f28e4 2554 for (i = 0; i < (port->num_def_qps); i++) {
2c69448b
JBT		 2555 struct ehea_port_res *pr = &port->port_res[i];
2556 struct ehea_qp *qp = pr->qp;
2557
2558 /* Purge send queue */
2559 ehea_purge_sq(qp);
2560
2561 /* Disable queue pair */
2562 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2563 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2564 cb0);
2565 if (hret != H_SUCCESS) {
8c4877a4 2566 pr_err("query_ehea_qp failed (1)\n");
2c69448b
JBT		 2567 goto out;
2568 }
2569
2570 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2571 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2572
2573 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2574 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2575 1), cb0, &dummy64,
2576 &dummy64, &dummy16, &dummy16);
2577 if (hret != H_SUCCESS) {
8c4877a4 2578 pr_err("modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2579 goto out;
2580 }
2581
2582 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2583 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2584 cb0);
2585 if (hret != H_SUCCESS) {
8c4877a4 2586 pr_err("query_ehea_qp failed (2)\n");
2c69448b
JBT		 2587 goto out;
2588 }
2589
2590 /* deregister shared memory regions */
2591 dret = ehea_rem_smrs(pr);
2592 if (dret) {
8c4877a4 2593 pr_err("unreg shared memory region failed\n");
2c69448b
JBT		 2594 goto out;
2595 }
2596 }
2597
2598 ret = 0;
2599out:
3faf2693 2600 free_page((unsigned long)cb0);
2c69448b
JBT		 2601
2602 return ret;
2603}
2604
1886e5d2 2605static void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2c69448b
JBT		 2606{
2607 struct ehea_qp qp = *orig_qp;
2608 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2609 struct ehea_rwqe *rwqe;
2610 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2611 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2612 struct sk_buff *skb;
2613 u32 lkey = pr->recv_mr.lkey;
2614
2615
2616 int i;
2617 int index;
2618
2619 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2620 rwqe = ehea_get_next_rwqe(&qp, 2);
2621 rwqe->sg_list[0].l_key = lkey;
2622 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2623 skb = skba_rq2[index];
2624 if (skb)
2625 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2626 }
2627
2628 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2629 rwqe = ehea_get_next_rwqe(&qp, 3);
2630 rwqe->sg_list[0].l_key = lkey;
2631 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2632 skb = skba_rq3[index];
2633 if (skb)
2634 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2635 }
2636}
2637
1886e5d2 2638static int ehea_restart_qps(struct net_device *dev)
2c69448b
JBT		 2639{
2640 struct ehea_port *port = netdev_priv(dev);
2641 struct ehea_adapter *adapter = port->adapter;
2642 int ret = 0;
2643 int i;
2644
508d2b5d 2645 struct hcp_modify_qp_cb0 *cb0;
2c69448b
JBT		 2646 u64 hret;
2647 u64 dummy64 = 0;
2648 u16 dummy16 = 0;
2649
3faf2693 2650 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2c69448b
JBT		 2651 if (!cb0) {
2652 ret = -ENOMEM;
2653 goto out;
2654 }
2655
723f28e4 2656 for (i = 0; i < (port->num_def_qps); i++) {
2c69448b
JBT		 2657 struct ehea_port_res *pr = &port->port_res[i];
2658 struct ehea_qp *qp = pr->qp;
2659
2660 ret = ehea_gen_smrs(pr);
2661 if (ret) {
8c4877a4 2662 netdev_err(dev, "creation of shared memory regions failed\n");
2c69448b
JBT		 2663 goto out;
2664 }
2665
2666 ehea_update_rqs(qp, pr);
2667
2668 /* Enable queue pair */
2669 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2670 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2671 cb0);
2672 if (hret != H_SUCCESS) {
8c4877a4 2673 netdev_err(dev, "query_ehea_qp failed (1)\n");
2c69448b
JBT		 2674 goto out;
2675 }
2676
2677 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2678 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2679
2680 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2681 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2682 1), cb0, &dummy64,
2683 &dummy64, &dummy16, &dummy16);
2684 if (hret != H_SUCCESS) {
8c4877a4 2685 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2c69448b
JBT		 2686 goto out;
2687 }
2688
2689 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2690 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2691 cb0);
2692 if (hret != H_SUCCESS) {
8c4877a4 2693 netdev_err(dev, "query_ehea_qp failed (2)\n");
2c69448b
JBT		 2694 goto out;
2695 }
2696
2697 /* refill entire queue */
2698 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2699 ehea_refill_rq2(pr, 0);
2700 ehea_refill_rq3(pr, 0);
2701 }
2702out:
3faf2693 2703 free_page((unsigned long)cb0);
2c69448b
JBT		 2704
2705 return ret;
2706}
2707
c4028958 2708static void ehea_reset_port(struct work_struct *work)
7a291083
JBT		 2709{
2710 int ret;
c4028958
DH		 2711 struct ehea_port *port =
2712 container_of(work, struct ehea_port, reset_task);
2713 struct net_device *dev = port->netdev;
7a291083 2714
099473c1 2715 mutex_lock(&dlpar_mem_lock);
7a291083 2716 port->resets++;
a5af6ad3 2717 mutex_lock(&port->port_lock);
b9564468 2718 netif_tx_disable(dev);
bea3348e
SH		 2719
2720 port_napi_disable(port);
7a291083 2721
44c82152 2722 ehea_down(dev);
7a291083
JBT		 2723
2724 ret = ehea_up(dev);
44c82152 2725 if (ret)
7a291083 2726 goto out;
7a291083 2727
2c69448b
JBT		 2728 ehea_set_multicast_list(dev);
2729
8c4877a4 2730 netif_info(port, timer, dev, "reset successful\n");
7a291083 2731
bea3348e
SH		 2732 port_napi_enable(port);
2733
b9564468 2734 netif_tx_wake_all_queues(dev);
7a291083 2735out:
a5af6ad3 2736 mutex_unlock(&port->port_lock);
099473c1 2737 mutex_unlock(&dlpar_mem_lock);
7a291083
JBT		 2738}
2739
3d6b892b 2740static void ehea_rereg_mrs(void)
44c82152
TK		 2741{
2742 int ret, i;
2743 struct ehea_adapter *adapter;
2744
8c4877a4 2745 pr_info("LPAR memory changed - re-initializing driver\n");
44c82152
TK		 2746
2747 list_for_each_entry(adapter, &adapter_list, list)
2748 if (adapter->active_ports) {
2749 /* Shutdown all ports */
2750 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2751 struct ehea_port *port = adapter->port[i];
a5af6ad3 2752 struct net_device *dev;
44c82152 2753
a5af6ad3
DW		 2754 if (!port)
2755 continue;
44c82152 2756
a5af6ad3
DW		 2757 dev = port->netdev;
2758
2759 if (dev->flags & IFF_UP) {
2760 mutex_lock(&port->port_lock);
b9564468 2761 netif_tx_disable(dev);
df39e8ba 2762 ehea_flush_sq(port);
a5af6ad3
DW		 2763 ret = ehea_stop_qps(dev);
2764 if (ret) {
2765 mutex_unlock(&port->port_lock);
2766 goto out;
44c82152 2767 }
a5af6ad3
DW		 2768 port_napi_disable(port);
2769 mutex_unlock(&port->port_lock);
44c82152 2770 }
2928db4c 2771 reset_sq_restart_flag(port);
44c82152
TK		 2772 }
2773
2774 /* Unregister old memory region */
2775 ret = ehea_rem_mr(&adapter->mr);
2776 if (ret) {
8c4877a4 2777 pr_err("unregister MR failed - driver inoperable!\n");
44c82152
TK		 2778 goto out;
2779 }
2780 }
2781
44c82152
TK		 2782 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2783
2784 list_for_each_entry(adapter, &adapter_list, list)
2785 if (adapter->active_ports) {
2786 /* Register new memory region */
2787 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2788 if (ret) {
8c4877a4 2789 pr_err("register MR failed - driver inoperable!\n");
44c82152
TK		 2790 goto out;
2791 }
2792
2793 /* Restart all ports */
2794 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2795 struct ehea_port *port = adapter->port[i];
2796
2797 if (port) {
2798 struct net_device *dev = port->netdev;
2799
2800 if (dev->flags & IFF_UP) {
a5af6ad3 2801 mutex_lock(&port->port_lock);
2c69448b 2802 ret = ehea_restart_qps(dev);
6f4d6dc1
BL		 2803 if (!ret) {
2804 check_sqs(port);
2805 port_napi_enable(port);
b9564468 2806 netif_tx_wake_all_queues(dev);
6f4d6dc1
BL		 2807 } else {
2808 netdev_err(dev, "Unable to restart QPS\n");
2809 }
a5af6ad3 2810 mutex_unlock(&port->port_lock);
44c82152
TK		 2811 }
2812 }
2813 }
2814 }
8c4877a4 2815 pr_info("re-initializing driver complete\n");
44c82152
TK		 2816out:
2817 return;
2818}
2819
7a291083
JBT		 2820static void ehea_tx_watchdog(struct net_device *dev)
2821{
2822 struct ehea_port *port = netdev_priv(dev);
2823
2c69448b
JBT		 2824 if (netif_carrier_ok(dev) &&
2825 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2f69ae01 2826 ehea_schedule_port_reset(port);
7a291083
JBT		 2827}
2828
1886e5d2 2829static int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
7a291083
JBT		 2830{
2831 struct hcp_query_ehea *cb;
2832 u64 hret;
2833 int ret;
2834
3faf2693 2835 cb = (void *)get_zeroed_page(GFP_KERNEL);
7a291083
JBT		 2836 if (!cb) {
2837 ret = -ENOMEM;
2838 goto out;
2839 }
2840
2841 hret = ehea_h_query_ehea(adapter->handle, cb);
2842
2843 if (hret != H_SUCCESS) {
2844 ret = -EIO;
2845 goto out_herr;
2846 }
2847
7a291083
JBT		 2848 adapter->max_mc_mac = cb->max_mc_mac - 1;
2849 ret = 0;
2850
2851out_herr:
3faf2693 2852 free_page((unsigned long)cb);
7a291083
JBT		 2853out:
2854 return ret;
2855}
2856
1886e5d2 2857static int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
7a291083 2858{
7a291083 2859 struct hcp_ehea_port_cb4 *cb4;
1acf2318
JBT		 2860 u64 hret;
2861 int ret = 0;
7a291083 2862
1acf2318 2863 *jumbo = 0;
7a291083 2864
1acf2318 2865 /* (Try to) enable *jumbo frames */
3faf2693 2866 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
7a291083 2867 if (!cb4) {
8c4877a4 2868 pr_err("no mem for cb4\n");
1acf2318
JBT		 2869 ret = -ENOMEM;
2870 goto out;
7a291083 2871 } else {
1acf2318 2872 hret = ehea_h_query_ehea_port(port->adapter->handle,
9c750b7d
TK		 2873 port->logical_port_id,
2874 H_PORT_CB4,
2875 H_PORT_CB4_JUMBO, cb4);
9c750b7d
TK		 2876 if (hret == H_SUCCESS) {
2877 if (cb4->jumbo_frame)
1acf2318 2878 *jumbo = 1;
9c750b7d
TK		 2879 else {
2880 cb4->jumbo_frame = 1;
1acf2318
JBT		 2881 hret = ehea_h_modify_ehea_port(port->adapter->
2882 handle,
9c750b7d 2883 port->
1acf2318 2884 logical_port_id,
9c750b7d
TK		 2885 H_PORT_CB4,
2886 H_PORT_CB4_JUMBO,
2887 cb4);
2888 if (hret == H_SUCCESS)
1acf2318 2889 *jumbo = 1;
9c750b7d 2890 }
1acf2318
JBT		 2891 } else
2892 ret = -EINVAL;
2893
3faf2693 2894 free_page((unsigned long)cb4);
7a291083 2895 }
1acf2318
JBT		 2896out:
2897 return ret;
2898}
2899
2900static ssize_t ehea_show_port_id(struct device *dev,
2901 struct device_attribute *attr, char *buf)
2902{
2903 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
a8e34fda 2904 return sprintf(buf, "%d", port->logical_port_id);
1acf2318
JBT		 2905}
2906
2907static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2908 NULL);
2909
2910static void __devinit logical_port_release(struct device *dev)
2911{
2912 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
61c7a080 2913 of_node_put(port->ofdev.dev.of_node);
1acf2318
JBT		 2914}
2915
2916static struct device *ehea_register_port(struct ehea_port *port,
2917 struct device_node *dn)
2918{
2919 int ret;
2920
61c7a080 2921 port->ofdev.dev.of_node = of_node_get(dn);
6b08f3ae 2922 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
d1dea38d 2923 port->ofdev.dev.bus = &ibmebus_bus_type;
1acf2318 2924
db1d7bf7 2925 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
1acf2318
JBT		 2926 port->ofdev.dev.release = logical_port_release;
2927
2928 ret = of_device_register(&port->ofdev);
2929 if (ret) {
8c4877a4 2930 pr_err("failed to register device. ret=%d\n", ret);
1acf2318
JBT		 2931 goto out;
2932 }
2933
2934 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
d1d25aab 2935 if (ret) {
8c4877a4 2936 pr_err("failed to register attributes, ret=%d\n", ret);
1acf2318
JBT		 2937 goto out_unreg_of_dev;
2938 }
e542aa6b 2939
1acf2318
JBT		 2940 return &port->ofdev.dev;
2941
2942out_unreg_of_dev:
2943 of_device_unregister(&port->ofdev);
2944out:
2945 return NULL;
2946}
2947
2948static void ehea_unregister_port(struct ehea_port *port)
2949{
2950 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2951 of_device_unregister(&port->ofdev);
2952}
2953
086c1b2c
TK		 2954static const struct net_device_ops ehea_netdev_ops = {
2955 .ndo_open = ehea_open,
2956 .ndo_stop = ehea_stop,
2957 .ndo_start_xmit = ehea_start_xmit,
2958#ifdef CONFIG_NET_POLL_CONTROLLER
2959 .ndo_poll_controller = ehea_netpoll,
2960#endif
239c562c 2961 .ndo_get_stats64 = ehea_get_stats64,
086c1b2c 2962 .ndo_set_mac_address = ehea_set_mac_addr,
240c102d 2963 .ndo_validate_addr = eth_validate_addr,
afc4b13d 2964 .ndo_set_rx_mode = ehea_set_multicast_list,
086c1b2c 2965 .ndo_change_mtu = ehea_change_mtu,
086c1b2c 2966 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
32e8f9a8
AB		 2967 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
2968 .ndo_tx_timeout = ehea_tx_watchdog,
086c1b2c
TK		 2969};
2970
1886e5d2 2971static struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
1acf2318
JBT		 2972 u32 logical_port_id,
2973 struct device_node *dn)
2974{
2975 int ret;
2976 struct net_device *dev;
2977 struct ehea_port *port;
2978 struct device *port_dev;
2979 int jumbo;
2980
2981 /* allocate memory for the port structures */
b9564468 2982 dev = alloc_etherdev_mq(sizeof(struct ehea_port), EHEA_MAX_PORT_RES);
1acf2318
JBT		 2983
2984 if (!dev) {
1acf2318
JBT		 2985 ret = -ENOMEM;
2986 goto out_err;
2987 }
2988
2989 port = netdev_priv(dev);
2990
a5af6ad3 2991 mutex_init(&port->port_lock);
1acf2318
JBT		 2992 port->state = EHEA_PORT_DOWN;
2993 port->sig_comp_iv = sq_entries / 10;
2994
2995 port->adapter = adapter;
2996 port->netdev = dev;
2997 port->logical_port_id = logical_port_id;
2998
2999 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3000
3001 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3002 if (!port->mc_list) {
3003 ret = -ENOMEM;
3004 goto out_free_ethdev;
3005 }
3006
3007 INIT_LIST_HEAD(&port->mc_list->list);
3008
3009 ret = ehea_sense_port_attr(port);
3010 if (ret)
3011 goto out_free_mc_list;
3012
b9564468 3013 netif_set_real_num_rx_queues(dev, port->num_def_qps);
723f28e4 3014 netif_set_real_num_tx_queues(dev, port->num_def_qps);
b9564468 3015
1acf2318
JBT		 3016 port_dev = ehea_register_port(port, dn);
3017 if (!port_dev)
3018 goto out_free_mc_list;
3019
3020 SET_NETDEV_DEV(dev, port_dev);
7a291083
JBT		 3021
3022 /* initialize net_device structure */
7a291083
JBT		 3023 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3024
086c1b2c
TK		 3025 dev->netdev_ops = &ehea_netdev_ops;
3026 ehea_set_ethtool_ops(dev);
3027
d695c335 3028 dev->hw_features = NETIF_F_SG | NETIF_F_TSO
f4786a96 3029 | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX | NETIF_F_LRO;
7a291083 3030 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
dc01c447 3031 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
7a291083 3032 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3f7947b9 3033 | NETIF_F_RXCSUM;
076f2032
AB		 3034 dev->vlan_features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HIGHDMA |
3035 NETIF_F_IP_CSUM;
7a291083
JBT		 3036 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3037
c4028958 3038 INIT_WORK(&port->reset_task, ehea_reset_port);
2aefcad8 3039 INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
7a291083 3040
21ccc793
AB		 3041 init_waitqueue_head(&port->swqe_avail_wq);
3042 init_waitqueue_head(&port->restart_wq);
3043
2aefcad8 3044 memset(&port->stats, 0, sizeof(struct net_device_stats));
7a291083
JBT		 3045 ret = register_netdev(dev);
3046 if (ret) {
8c4877a4 3047 pr_err("register_netdev failed. ret=%d\n", ret);
21eee2dd 3048 goto out_unreg_port;
7a291083
JBT		 3049 }
3050
1acf2318 3051 ret = ehea_get_jumboframe_status(port, &jumbo);
e542aa6b 3052 if (ret)
8c4877a4 3053 netdev_err(dev, "failed determining jumbo frame status\n");
1acf2318 3054
8c4877a4
JP		 3055 netdev_info(dev, "Jumbo frames are %sabled\n",
3056 jumbo == 1 ? "en" : "dis");
9c750b7d 3057
44c82152
TK		 3058 adapter->active_ports++;
3059
1acf2318 3060 return port;
7a291083 3061
1acf2318
JBT		 3062out_unreg_port:
3063 ehea_unregister_port(port);
3064
3065out_free_mc_list:
7a291083 3066 kfree(port->mc_list);
1acf2318
JBT		 3067
3068out_free_ethdev:
3069 free_netdev(dev);
3070
3071out_err:
8c4877a4
JP		 3072 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3073 logical_port_id, ret);
1acf2318
JBT		 3074 return NULL;
3075}
3076
3077static void ehea_shutdown_single_port(struct ehea_port *port)
3078{
7fb1c2ac 3079 struct ehea_adapter *adapter = port->adapter;
f5c35cc1
TH		 3080
3081 cancel_work_sync(&port->reset_task);
2aefcad8 3082 cancel_delayed_work_sync(&port->stats_work);
1acf2318
JBT		 3083 unregister_netdev(port->netdev);
3084 ehea_unregister_port(port);
3085 kfree(port->mc_list);
3086 free_netdev(port->netdev);
7fb1c2ac 3087 adapter->active_ports--;
7a291083
JBT		 3088}
3089
3090static int ehea_setup_ports(struct ehea_adapter *adapter)
3091{
1acf2318
JBT		 3092 struct device_node *lhea_dn;
3093 struct device_node *eth_dn = NULL;
d1d25aab 3094
9f9a3b8a 3095 const u32 *dn_log_port_id;
1acf2318
JBT		 3096 int i = 0;
3097
61c7a080 3098 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3099 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3100
40cd3a45 3101 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3102 NULL);
1acf2318 3103 if (!dn_log_port_id) {
8c4877a4
JP		 3104 pr_err("bad device node: eth_dn name=%s\n",
3105 eth_dn->full_name);
1acf2318
JBT		 3106 continue;
3107 }
7a291083 3108
1211bb6d 3109 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3110 pr_err("creating MR failed\n");
1211bb6d
TK		 3111 of_node_put(eth_dn);
3112 return -EIO;
3113 }
3114
1acf2318
JBT		 3115 adapter->port[i] = ehea_setup_single_port(adapter,
3116 *dn_log_port_id,
3117 eth_dn);
7a291083 3118 if (adapter->port[i])
8c4877a4
JP		 3119 netdev_info(adapter->port[i]->netdev,
3120 "logical port id #%d\n", *dn_log_port_id);
1211bb6d
TK		 3121 else
3122 ehea_remove_adapter_mr(adapter);
3123
1acf2318 3124 i++;
ee289b64 3125 }
1211bb6d 3126 return 0;
1acf2318
JBT		 3127}
3128
e542aa6b
JBT		 3129static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3130 u32 logical_port_id)
1acf2318
JBT		 3131{
3132 struct device_node *lhea_dn;
3133 struct device_node *eth_dn = NULL;
9f9a3b8a 3134 const u32 *dn_log_port_id;
1acf2318 3135
61c7a080 3136 lhea_dn = adapter->ofdev->dev.of_node;
1eef4e04 3137 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
e542aa6b 3138
40cd3a45 3139 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
d1d25aab 3140 NULL);
1acf2318
JBT		 3141 if (dn_log_port_id)
3142 if (*dn_log_port_id == logical_port_id)
3143 return eth_dn;
ee289b64 3144 }
1acf2318
JBT		 3145
3146 return NULL;
3147}
3148
3149static ssize_t ehea_probe_port(struct device *dev,
3150 struct device_attribute *attr,
3151 const char *buf, size_t count)
3152{
c7ae011d 3153 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3154 struct ehea_port *port;
3155 struct device_node *eth_dn = NULL;
3156 int i;
3157
3158 u32 logical_port_id;
3159
a8e34fda 3160 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3161
3162 port = ehea_get_port(adapter, logical_port_id);
3163
3164 if (port) {
8c4877a4
JP		 3165 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3166 logical_port_id);
1acf2318 3167 return -EINVAL;
7a291083 3168 }
e542aa6b 3169
1acf2318 3170 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
7a291083 3171
1acf2318 3172 if (!eth_dn) {
8c4877a4 3173 pr_info("no logical port with id %d found\n", logical_port_id);
1acf2318
JBT		 3174 return -EINVAL;
3175 }
e542aa6b 3176
1211bb6d 3177 if (ehea_add_adapter_mr(adapter)) {
8c4877a4 3178 pr_err("creating MR failed\n");
1211bb6d
TK		 3179 return -EIO;
3180 }
3181
1acf2318 3182 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
7a291083 3183
1eef4e04
JBT		 3184 of_node_put(eth_dn);
3185
1acf2318 3186 if (port) {
508d2b5d 3187 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3188 if (!adapter->port[i]) {
3189 adapter->port[i] = port;
3190 break;
3191 }
7a291083 3192
8c4877a4
JP		 3193 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3194 logical_port_id);
1211bb6d
TK		 3195 } else {
3196 ehea_remove_adapter_mr(adapter);
e542aa6b 3197 return -EIO;
1211bb6d 3198 }
7a291083 3199
1acf2318
JBT		 3200 return (ssize_t) count;
3201}
3202
3203static ssize_t ehea_remove_port(struct device *dev,
3204 struct device_attribute *attr,
3205 const char *buf, size_t count)
3206{
c7ae011d 3207 struct ehea_adapter *adapter = dev_get_drvdata(dev);
1acf2318
JBT		 3208 struct ehea_port *port;
3209 int i;
3210 u32 logical_port_id;
3211
a8e34fda 3212 sscanf(buf, "%d", &logical_port_id);
1acf2318
JBT		 3213
3214 port = ehea_get_port(adapter, logical_port_id);
3215
3216 if (port) {
8c4877a4
JP		 3217 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3218 logical_port_id);
1acf2318
JBT		 3219
3220 ehea_shutdown_single_port(port);
3221
508d2b5d 3222 for (i = 0; i < EHEA_MAX_PORTS; i++)
1acf2318
JBT		 3223 if (adapter->port[i] == port) {
3224 adapter->port[i] = NULL;
3225 break;
3226 }
3227 } else {
8c4877a4
JP		 3228 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3229 logical_port_id);
1acf2318
JBT		 3230 return -EINVAL;
3231 }
3232
1211bb6d
TK		 3233 ehea_remove_adapter_mr(adapter);
3234
1acf2318
JBT		 3235 return (ssize_t) count;
3236}
3237
3238static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3239static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3240
1886e5d2 3241static int ehea_create_device_sysfs(struct platform_device *dev)
1acf2318 3242{
6b08f3ae 3243 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
1acf2318
JBT		 3244 if (ret)
3245 goto out;
3246
6b08f3ae 3247 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
1acf2318 3248out:
7a291083
JBT		 3249 return ret;
3250}
3251
1886e5d2 3252static void ehea_remove_device_sysfs(struct platform_device *dev)
1acf2318 3253{
6b08f3ae
JF		 3254 device_remove_file(&dev->dev, &dev_attr_probe_port);
3255 device_remove_file(&dev->dev, &dev_attr_remove_port);
1acf2318
JBT		 3256}
3257
2dc11581 3258static int __devinit ehea_probe_adapter(struct platform_device *dev,
1acf2318 3259 const struct of_device_id *id)
7a291083
JBT		 3260{
3261 struct ehea_adapter *adapter;
9f9a3b8a 3262 const u64 *adapter_handle;
7a291083
JBT		 3263 int ret;
3264
61c7a080 3265 if (!dev || !dev->dev.of_node) {
8c4877a4 3266 pr_err("Invalid ibmebus device probed\n");
1eef4e04
JBT		 3267 return -EINVAL;
3268 }
3269
7a291083
JBT		 3270 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3271 if (!adapter) {
3272 ret = -ENOMEM;
6b08f3ae 3273 dev_err(&dev->dev, "no mem for ehea_adapter\n");
7a291083
JBT		 3274 goto out;
3275 }
3276
44c82152
TK		 3277 list_add(&adapter->list, &adapter_list);
3278
6b08f3ae 3279 adapter->ofdev = dev;
1acf2318 3280
61c7a080 3281 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
d1d25aab 3282 NULL);
061bf3cd
TK		 3283 if (adapter_handle)
3284 adapter->handle = *adapter_handle;
3285
3286 if (!adapter->handle) {
6b08f3ae 3287 dev_err(&dev->dev, "failed getting handle for adapter"
61c7a080 3288 " '%s'\n", dev->dev.of_node->full_name);
7a291083
JBT		 3289 ret = -ENODEV;
3290 goto out_free_ad;
3291 }
3292
7a291083
JBT		 3293 adapter->pd = EHEA_PD_ID;
3294
c7ae011d 3295 dev_set_drvdata(&dev->dev, adapter);
7a291083 3296
7a291083
JBT		 3297
3298 /* initialize adapter and ports */
3299 /* get adapter properties */
3300 ret = ehea_sense_adapter_attr(adapter);
3301 if (ret) {
898eb71c 3302 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
1211bb6d 3303 goto out_free_ad;
7a291083 3304 }
7a291083
JBT		 3305
3306 adapter->neq = ehea_create_eq(adapter,
3307 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3308 if (!adapter->neq) {
1eef4e04 3309 ret = -EIO;
898eb71c 3310 dev_err(&dev->dev, "NEQ creation failed\n");
1211bb6d 3311 goto out_free_ad;
7a291083
JBT		 3312 }
3313
3314 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3315 (unsigned long)adapter);
3316
6b08f3ae 3317 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
38515e90 3318 ehea_interrupt_neq, IRQF_DISABLED,
7a291083
JBT		 3319 "ehea_neq", adapter);
3320 if (ret) {
898eb71c 3321 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
7a291083
JBT		 3322 goto out_kill_eq;
3323 }
3324
1eef4e04
JBT		 3325 ret = ehea_create_device_sysfs(dev);
3326 if (ret)
3bf76b81 3327 goto out_free_irq;
1acf2318 3328
7a291083
JBT		 3329 ret = ehea_setup_ports(adapter);
3330 if (ret) {
898eb71c 3331 dev_err(&dev->dev, "setup_ports failed\n");
1acf2318 3332 goto out_rem_dev_sysfs;
7a291083
JBT		 3333 }
3334
3335 ret = 0;
3336 goto out;
3337
1acf2318
JBT		 3338out_rem_dev_sysfs:
3339 ehea_remove_device_sysfs(dev);
3340
7a291083 3341out_free_irq:
6b08f3ae 3342 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
7a291083
JBT		 3343
3344out_kill_eq:
3345 ehea_destroy_eq(adapter->neq);
3346
7a291083 3347out_free_ad:
51621fbd 3348 list_del(&adapter->list);
7a291083 3349 kfree(adapter);
21eee2dd 3350
7a291083 3351out:
21eee2dd 3352 ehea_update_firmware_handles();
52e21b1b 3353
7a291083
JBT		 3354 return ret;
3355}
3356
2dc11581 3357static int __devexit ehea_remove(struct platform_device *dev)
7a291083 3358{
c7ae011d 3359 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
7a291083
JBT		 3360 int i;
3361
1acf2318 3362 for (i = 0; i < EHEA_MAX_PORTS; i++)
7a291083
JBT		 3363 if (adapter->port[i]) {
3364 ehea_shutdown_single_port(adapter->port[i]);
3365 adapter->port[i] = NULL;
3366 }
1acf2318
JBT		 3367
3368 ehea_remove_device_sysfs(dev);
3369
6b08f3ae 3370 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
d4150a27 3371 tasklet_kill(&adapter->neq_tasklet);
7a291083
JBT		 3372
3373 ehea_destroy_eq(adapter->neq);
1211bb6d 3374 ehea_remove_adapter_mr(adapter);
44c82152 3375 list_del(&adapter->list);
7a291083 3376 kfree(adapter);
44c82152 3377
21eee2dd 3378 ehea_update_firmware_handles();
21eee2dd 3379
7a291083
JBT		 3380 return 0;
3381}
3382
1886e5d2 3383static void ehea_crash_handler(void)
21eee2dd
TK		 3384{
3385 int i;
3386
3387 if (ehea_fw_handles.arr)
3388 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3389 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3390 ehea_fw_handles.arr[i].fwh,
3391 FORCE_FREE);
3392
3393 if (ehea_bcmc_regs.arr)
3394 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3395 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3396 ehea_bcmc_regs.arr[i].port_id,
3397 ehea_bcmc_regs.arr[i].reg_type,
3398 ehea_bcmc_regs.arr[i].macaddr,
3399 0, H_DEREG_BCMC);
3400}
3401
48cfb14f
HH		 3402static int ehea_mem_notifier(struct notifier_block *nb,
3403 unsigned long action, void *data)
3404{
a7c561f2 3405 int ret = NOTIFY_BAD;
d4f12daf 3406 struct memory_notify *arg = data;
a7c561f2 3407
099473c1 3408 mutex_lock(&dlpar_mem_lock);
a7c561f2 3409
48cfb14f 3410 switch (action) {
d4f12daf 3411 case MEM_CANCEL_OFFLINE:
8c4877a4 3412 pr_info("memory offlining canceled");
d4f12daf
HH		 3413 /* Readd canceled memory block */
3414 case MEM_ONLINE:
8c4877a4 3415 pr_info("memory is going online");
3876732c 3416 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3417 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3418 goto out_unlock;
3d6b892b 3419 ehea_rereg_mrs();
d4f12daf
HH		 3420 break;
3421 case MEM_GOING_OFFLINE:
8c4877a4 3422 pr_info("memory is going offline");
3876732c 3423 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
d4f12daf 3424 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
a7c561f2 3425 goto out_unlock;
3d6b892b 3426 ehea_rereg_mrs();
48cfb14f
HH		 3427 break;
3428 default:
3429 break;
3430 }
52e21b1b
JBT		 3431
3432 ehea_update_firmware_handles();
a7c561f2 3433 ret = NOTIFY_OK;
52e21b1b 3434
a7c561f2
TK		 3435out_unlock:
3436 mutex_unlock(&dlpar_mem_lock);
a7c561f2 3437 return ret;
48cfb14f
HH		 3438}
3439
3440static struct notifier_block ehea_mem_nb = {
3441 .notifier_call = ehea_mem_notifier,
3442};
3443
2a6f4e49
JBT		 3444static int ehea_reboot_notifier(struct notifier_block *nb,
3445 unsigned long action, void *unused)
3446{
3447 if (action == SYS_RESTART) {
8c4877a4 3448 pr_info("Reboot: freeing all eHEA resources\n");
2a6f4e49
JBT		 3449 ibmebus_unregister_driver(&ehea_driver);
3450 }
3451 return NOTIFY_DONE;
3452}
3453
3454static struct notifier_block ehea_reboot_nb = {
508d2b5d 3455 .notifier_call = ehea_reboot_notifier,
2a6f4e49
JBT		 3456};
3457
7a291083
JBT		 3458static int check_module_parm(void)
3459{
3460 int ret = 0;
3461
3462 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3463 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
8c4877a4 3464 pr_info("Bad parameter: rq1_entries\n");
7a291083
JBT		 3465 ret = -EINVAL;
3466 }
3467 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3468 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
8c4877a4 3469 pr_info("Bad parameter: rq2_entries\n");
7a291083
JBT		 3470 ret = -EINVAL;
3471 }
3472 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3473 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
8c4877a4 3474 pr_info("Bad parameter: rq3_entries\n");
7a291083
JBT		 3475 ret = -EINVAL;
3476 }
3477 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3478 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
8c4877a4 3479 pr_info("Bad parameter: sq_entries\n");
7a291083
JBT		 3480 ret = -EINVAL;
3481 }
3482
3483 return ret;
3484}
3485
4c3ca4da
JBT		 3486static ssize_t ehea_show_capabilities(struct device_driver *drv,
3487 char *buf)
3488{
3489 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3490}
3491
3492static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3493 ehea_show_capabilities, NULL);
3494
1886e5d2 3495static int __init ehea_module_init(void)
7a291083
JBT		 3496{
3497 int ret;
3498
8c4877a4 3499 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
7a291083 3500
21eee2dd
TK		 3501 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3502 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3503
9f71a568 3504 mutex_init(&ehea_fw_handles.lock);
5c2cec14 3505 spin_lock_init(&ehea_bcmc_regs.lock);
44c82152 3506
7a291083
JBT		 3507 ret = check_module_parm();
3508 if (ret)
3509 goto out;
44c82152
TK		 3510
3511 ret = ehea_create_busmap();
3512 if (ret)
3513 goto out;
3514
21eee2dd
TK		 3515 ret = register_reboot_notifier(&ehea_reboot_nb);
3516 if (ret)
8c4877a4 3517 pr_info("failed registering reboot notifier\n");
21eee2dd 3518
48cfb14f
HH		 3519 ret = register_memory_notifier(&ehea_mem_nb);
3520 if (ret)
8c4877a4 3521 pr_info("failed registering memory remove notifier\n");
48cfb14f 3522
c061b18d 3523 ret = crash_shutdown_register(ehea_crash_handler);
21eee2dd 3524 if (ret)
8c4877a4 3525 pr_info("failed registering crash handler\n");
2a6f4e49 3526
7a291083 3527 ret = ibmebus_register_driver(&ehea_driver);
4c3ca4da 3528 if (ret) {
8c4877a4 3529 pr_err("failed registering eHEA device driver on ebus\n");
21eee2dd 3530 goto out2;
4c3ca4da
JBT		 3531 }
3532
3533 ret = driver_create_file(&ehea_driver.driver,
3534 &driver_attr_capabilities);
3535 if (ret) {
8c4877a4
JP		 3536 pr_err("failed to register capabilities attribute, ret=%d\n",
3537 ret);
21eee2dd 3538 goto out3;
4c3ca4da 3539 }
7a291083 3540
21eee2dd
TK		 3541 return ret;
3542
3543out3:
3544 ibmebus_unregister_driver(&ehea_driver);
3545out2:
48cfb14f 3546 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd 3547 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3548 crash_shutdown_unregister(ehea_crash_handler);
7a291083
JBT		 3549out:
3550 return ret;
3551}
3552
3553static void __exit ehea_module_exit(void)
3554{
21eee2dd
TK		 3555 int ret;
3556
4c3ca4da 3557 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
7a291083 3558 ibmebus_unregister_driver(&ehea_driver);
2a6f4e49 3559 unregister_reboot_notifier(&ehea_reboot_nb);
c061b18d 3560 ret = crash_shutdown_unregister(ehea_crash_handler);
21eee2dd 3561 if (ret)
8c4877a4 3562 pr_info("failed unregistering crash handler\n");
48cfb14f 3563 unregister_memory_notifier(&ehea_mem_nb);
21eee2dd
TK		 3564 kfree(ehea_fw_handles.arr);
3565 kfree(ehea_bcmc_regs.arr);
44c82152 3566 ehea_destroy_busmap();
7a291083
JBT		 3567}
3568
3569module_init(ehea_module_init);
3570module_exit(ehea_module_exit);
Linux 6.x block layer and io_uring tree(s)